Sen. Tim Kaine Timothy (Tim) Michael KaineBiden promises Democratic senators help in battleground states Second GOP senator to quarantine after exposure to coronavirus The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Pence lauds Harris as 'experienced debater'; Trump, Biden diverge over debate prep MORE (D-Va.) said he is making changes to his resolution that would limit President Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE's ability to take military action against Iran as he tries to pick up more Republican support.

"Republicans are giving us some good suggestions ... so we're in the process of trying to develop a managers package that would get more people on board," Kaine said Thursday.

Kaine's resolution would force Trump to remove troops from hostilities against Iran within 30 days unless the activity is meant to respond to an "imminent" threat. Democrats will be able to bring Kaine's resolution to the floor as soon as Tuesday morning, where he'll need 51 votes to get it through the chamber.

Kaine, in his war powers resolution, said he is removing two paragraphs in the "findings" section of his measure that directly mention Trump.

"I don't criticize the president ... but I've had from these two Republicans but also a Democrat or two say 'hey this is really about any president. This is not about President Trump.' I said 'good point.' They ask that we drop it, those two paragraphs, so I'm going to drop those two paragraphs," Kaine said.

He added that he's also making "really technical changes" to help clarify the intent of the resolution.

Collins said on Thursday that she had a meeting with Kaine on Wednesday to discuss the resolution.

"The language is not yet final, and we discussed some of the issues. Until Sen. Kaine decides on his final language, I cannot determine whether or not I will support it," she said.

Moran has also said he is undecided on Kaine's resolution.

Kaine said he is also talking to a broader group of Republican colleagues, including lawmakers on the Foreign Relations Committee and those who supported ending U.S. backing for Saudi Arabia's military activities in Yemen.

Asked on Thursday if he thought the changes he was making were enough to win over Young and Collins, which would give him 51 votes, Kaine demurred.

"I think they view them positively. Whether they're enough you know we're still in dialogue," Kaine said. "But they've given us some changes, some of which we've made."