Senate to Vote on War Powers Resolution.
SCIUTTO: Soon, the Senate will vote on a resolution restricting the president's ability to use military action against Iran without congressional approval.</s>HARLOW: The measure was expected to pass with bipartisan support. But now, if a Republican-sponsored amendment passes, the bill could lose support from Democrats. CNN national correspondent Suzanne Malveaux is on Capitol Hill. It was a rare showing -- or expected to be a rare showing of bipartisan support in the Senate for something that actually constrains the power of the presidency. What's going on with it now, though?</s>SUZANNE MALVEAUX, CNN NATIONAL CORRESPONDENT: So, Poppy, this is really a chance to see how the sausage is made here on Capitol Hill because this is the process of introducing these amendments, and some of them are call poison pills because they are just so bad that this is not something that Democrats can swallow. So you have Senator Tom Cotton who's introducing an amendment that essentially says, yes, OK, you could limit the president's power, war powers in Iran, but you have to make some exceptions for foreign terrorist organizations. Well, there are at least 30 designated foreign terrorist organizations, so essentially it would make it null and void and this resolution would be blown up. And so we're -- Democrats would not support it. Let's say -- let's put that aside and say it's not an issue here, that perhaps they do go to that vote that was expected this afternoon. If they do that, then it is expected that you will have at least eight Republicans joining 43 Democrats for this particular resolution. And these are very similar, familiar names that we've heard: Susan Collins, Lisa Murkowski, Rand Paul. You've got people who are veterans, and you also have constitutional conservatives. How are they signing onto this in light of the environment of retribution from this president? Well, I had a chance to talk to Senator Tim Kaine of Virginia, a Democrat who's the author of the resolution. And he says one thing that they are doing is they are not assigning the president's name to this War Powers Act -- Poppy.</s>SEN. TIM KAINE (D-VA): They don't see it as crossing the president. If it was crossing the president, they might not get on board. But my resolution doesn't say anything about the -- doesn't mention President Trump, it just says we're engaged in hostilities with Iran that are not subject to a statutory authorization. Congress needs to authorize them.</s>MALVEAUX: And so, Poppy, Jim, we'll see how this all plays out this morning, whether or not we get to that vote for the resolution. Right now, it's still up in flux here, whether or not these poison pills will kill this from the very beginning.</s>HARLOW: OK.</s>SCIUTTO: Suzanne Malveaux, thanks very much. We have some breaking news now, just in to CNN. This from the Treasury Department, Jessie Liu submitting her resignation to the Treasury Department yesterday, CNN is learning. Our Evan Perez here. Liu, of course, caught up in the prosecution of the Roger Stone case, which is -- was her prior position, correct? So now she's stepping down.</s>EVAN PEREZ, CNN SENIOR JUSTICE CORRESPONDENT: That's right, Jim. She was supposed to be -- today, actually -- was supposed to be before the Senate for this new position at the Treasury Department. And obviously, now, the fact that the president has pulled her nomination, this is the second nomination that she's had to withdraw from. She has now officially submitted her resignation. She did so yesterday, to the Treasury Department, and that was -- that resignation was accepted, according to an administration official who talked to Kaitlan Collins over at the White House. Look, I think it's very clear that she needed to do this, given the fact that it is now twice that she has -- she has failed to win these two nominations.</s>HARLOW: Yes. Evan, thank you very much. Obviously, this just crossed. We'll try to get some more info when we can. We'll be right back.