THE TOPLINE: The House will move on its $674.6 billion fiscal 2019 Pentagon spending bill next week.

First up, the House Rules Committee has to decide which of more than a hundred amendments will get a floor vote.

As of Friday afternoon, 123 amendments have been filed. A full list of amendments is on the Rules Committee website, but here are a few highlights. Keep in mind the most interesting (read: controversial) often don't make it out of the committee:

Immigration: Several Democratic amendments are focused on the ongoing controversy over family separations at the U.S.-Mexico border and other immigration issues. One from 26 Democrats led by Rep. Lloyd Doggett (D-Texas) would prohibit the Pentagon from fulfilling any requests made by Health and Human Services related to the care or custody of unaccompanied children and those separated from their parents.

Another one from Reps. Adam Schiff (D-Calif.) and Peter Welch (D-Vt.) would prohibit funding to help with facilities detaining unaccompanied immigrant children on Pentagon-owned land.

Another amendment from Democratic Reps. Raja Krishnamoorthi (Ill.), Welch, Nydia Velázquez (N.Y.) and Jim McGovern (Mass.) would bar funding for detaining immigrant families on Defense Department property.

An amendment from Rep. Beto O'Rourke (D-Texas) would ban funding from being used to deploy the National Guard to the southern border to enforce immigration laws. Rep. David Cicilline (D-R.I.) similarly filed an amendment to ban the use of National Guardsmen to enforce immigration laws.

Cicilline and Reps. Ted Lieu (D-Calif.) and Dina Titus (D-Nev.) also have an amendment to prohibit funding from being used to have Judge Advocate Generals (JAGs) help with immigration enforcement, while Rep. Sheila Jackson Lee (D-Texas) has a similar amendment to prevent funding from being used to reassign JAGs from the Pentagon to the Justice Department. And Reps. Jose Serrano (D-N.Y.) and Joseph Crowley (D-N.Y.) have an amendment to prevent the Pentagon from entering into an agreement with the Justice Department to use Defense Department personnel to enforce immigration laws.

F-35s to Turkey: Reps. John Sarbanes (D-Md.), Gus Bilirakis (R-Fla.) and Cicilline have the latest attempt to prevent Turkey from getting F-35 fighter jets. Their amendment would ban any funding from being used to transfer the aircraft to Turkey.

Aircraft carrier: Reps. Rob Wittman (R-Va.) and Joe Courtney (D-Conn.), the leaders of the House Armed Services seapower subcommittee, filed an amendment to allow the Navy to buy its next two aircraft carriers, as opposed to just one. Such an amendment would get the appropriations bill on the same page as the House's National Defense Authorization Act. The amendment is co-sponsored by Reps. Bobby Scott (D-Va.) and Mike Gallagher (R-Wis.).

Transgender troops: Reps. Titus, Jackie Speier (D-Calif.) and Earl Blumenauer (D-Ore.) filed an amendment to prohibit funding from being used to separate troops based solely on their gender identity.

Chinese tech: Rep. Ruben Gallego (D-Ariz.) has two amendment targeting Chinese telecommunications companies ZTE and Huawei. One prevents funding from being used to enter into a contract with the companies. The other prevents funding from being used to reduce any penalties assessed to the companies.

OBSTACLES TO TRUMP'S SPACE FORCE: President Trump's proposal this week for a "Space Force" is already facing obstacles in Congress and at the Pentagon -- two places where he'll need broad support to get his initiative off the ground.

Trump surprised lawmakers and military officials on Monday when he directed the Defense Department to create a Space Force as its sixth military service branch. On Capitol Hill, the president faces the difficult task of garnering congressional backing for his plan, with several key lawmakers voicing skepticism over the idea.

The opposition in Congress: Sen. Bill Nelson (D-Fla.), who led last year's effort to kill a House proposal to establish a space corps within the Air Force, is leading the charge again this year to attempt to extinguish the idea.

"I think it's somebody wanting to have something new that they can talk about," Nelson, a member of the Senate Armed Services Committee, said of Trump's plan.

Nelson said that the new branch "would cost so much money, it would be so duplicative." He added that Air Force officials also don't want the move, but "they are now muzzled" by the administration from speaking out against it.

Senior member of the Armed Services panel, Sen. James Inhofe (R-Okla.), meanwhile, told The Hill he's reluctant to back a separate Space Force.

"That's a serious subject. It's one that I would have a hard time supporting," Inhofe said. "All of our branches have the space element and it's working. If it ain't broke, don't fix it."

He added that he's "not sure how serious" Trump was when he made the announcement.

Time issues: The commander in chief will need help from lawmakers, who must decide whether to amend Title 10 of the United States Code to allow for the creation of a new military service.

But both the House and the Senate have completed their versions of the annual defense policy bill, with little room for a Space Force provision to be added when lawmakers from both chambers reconcile the two measures during a conference committee.

Timing-wise, that would leave next year's NDAA as the next opportunity for Congress to tackle the issue. But even then, creating a Space Force is expected to take at least another two or three years, minimum.

Hurdles at the Pentagon: The Pentagon also appears hesitant to act quickly on Trump's directive, with military officials releasing a statement after his announcement indicating the process would take some time.

"Our policy board will begin working on this issue, which has implications for intelligence operations for the Air Force, Army, Marines and Navy," chief Pentagon spokeswoman Dana White said. "Working with Congress, this will be a deliberate process with a great deal of input from multiple stakeholders."

Defense Secretary James Mattis on Wednesday said that Trump's proposal will require work with Congress that has not yet started.

And Air Force leaders last year warned that it would be premature and create burdensome bureaucracy to separate a space component from the rest of the service.

On Tuesday, Air Force officials released a memo to personnel saying not to expect any immediate changes following Trump's announcement.

SENATORS 'DEEPLY TROUBLED' MILITARY LAWYERS BEING USED FOR IMMIGRATION CASES: Three senators, including one Republican, are asking the Pentagon to rethink its decision to send military lawyers to help prosecute immigration cases.

"For years, Congress has worked with the department on reforming the military justice system and providing the services with the resources to support the critical mission of promoting justice and maintaining good order and discipline within the armed forces," Sens. Kirsten Gillibrand (D-N.Y.), Joni Ernst (R-Iowa) and Patrick Leahy (D-Vt.) wrote in a letter to Defense Secretary James Mattis on Thursday night.

"We are, therefore, deeply troubled by the department's decision to send twenty-one active and reserve JAGs to the border on temporary orders to prosecute immigration cases," they added.

The issue: News broke Wednesday night that the Pentagon had approved a request from the Justice Department to send 21 Judge Advocate Generals (JAGs) to the U.S.-Mexico border to help clear a backlog of immigration cases.

That happened amid an uproar over the Trump administration's "zero tolerance" policy that starts the process of criminal prosecution for all illegal border crossers, leading to more than 2,000 children being separated from their parents.

The JAGs will be appointed special assistant U.S. attorneys to help prosecute misdemeanor improper entry and felony illegal reentry cases. The temporary assignments are expected to last about six months.

What the senators ask: In their letter, the senators said they are concerned the lawyers are being used for a non-military mission for which they have no training.

"While JAGs currently serve as special assistant United States attorneys throughout the country, this occurs in districts