President Trump on Monday said the final GOP tax bill should include language repealing ObamaCare's individual mandate and cutting the top individual tax rate to 35 percent.

"I am proud of the Rep. House & Senate for working so hard on cutting taxes {& reform.} We’re getting close!" Trump tweeted.

"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?"

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

Trump, who is currently in the Philippines for the last leg of his 12-day tour of Asia, has repeatedly called for the tax legislation to include a repeal of the individual mandate in recent weeks. Repeal of the mandate is not in either the House or Senate bills, but GOP lawmakers say the issue is still under discussion.

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Both the House and Senate bills have top individual tax rates above 35 percent. The House bill would keep the top individual rate at 39.6 percent, while the Senate bill lowers the top rate slightly to 38.5 percent.

Achieving both of Trump's requests could be a challenge for congressional Republicans. While repealing the individual mandate would produce savings, some lawmakers are weary of mixing health care and tax reform. And cutting the top individual rate could be expensive and help to further Democrats' attacks that Republicans' tax plans are aimed at helping the rich.