Story highlights Gary Cohn, the President's top economic adviser, met Monday with House GOPers

Republican leaders are still ironing out last-minute concerns ahead of a tax bill vote

(CNN) House Republicans are forging ahead with plans to vote on their tax bill Thursday just weeks after the legislation was first released.

Most lawmakers are upbeat about their bill's prospect, with members from all corners of the conference from the conservative House Freedom Caucus to the moderate Tuesday Group telling CNN that they plan to vote "yes."

But as with all legislation, Republican leaders are still ironing out last-minute concerns and whipping their bill.

I am proud of the Rep. House & Senate for working so hard on cutting taxes {& reform.} We're getting close! Now, how about ending the unfair & highly unpopular Indiv Mandate in OCare & reducing taxes even further? Cut top rate to 35% w/all of the rest going to middle income cuts? — Donald J. Trump (@realDonaldTrump) November 13, 2017

"Look, we're pushing this bill as we have it," House Speaker Paul Ryan told reporters Tuesday when asked about Trump's request. "There's ongoing conversations. It's a work in progress. ... We're going to go to a conference committee and we're going to address all these issues and we're taking feedback from all of our members on an ongoing basis."