"Trump has also been pushing Democrats to join him in overhauling the nation's tax code and making a major investment in infrastructure spending, despite chilly relations in the first months of his administration".
On taxes, Trump himself added to the complications when he surprisingly declared, at a meeting with a bipartisan group of House members, that taxes on the wealthy would not go down under the GOP plan and might even go up.
Still, Trump declared, "The rich will not be gaining at all with this plan".
"There's a lower boundary on this and it's much higher than what the president and congressional Republicans say", said Howard Gleckman, a senior fellow at the center. "We are looking for the middle class and we are looking for jobs - jobs being the economy".
According to The Hill, Ryan called Wednesday's meeting at the request of Democrats after Trump canceled DACA, which shields some 690,000 young illegal immigrants who were brought to the United States as children.
Many GOP lawmakers are hungry for details about the upcoming tax plan.
The Wisconsin Republican says in an AP Newsmakers interview that that he wanted a more long-term increase to the debt ceiling beyond three months - hoping not to "play politics with the credit markets".
The tax overhaul principles Republicans have put forth envision slashes in the corporate tax rate and individual tax rates.
The conflicting statements have made it hard for lawmakers to predict what might fill in the gaps left by a one-page tax blueprint that the White House released in April. One problem is that every tax deduction has its own constituency, and Ryan has already ruled out eliminating some of the most popular ones, including deductions for home mortgages and charitable giving.
Referencing tax cuts signed by President George W. Bush, Ryan said, "You can't just do what Bush did in 2001 and 2003".
Trump met Tuesday with Democratic Sens. John Thune of North Dakota, Pat Toomey of Pennsylvania and Orrin Hatch, of Utah.
After the morning House GOP meeting, Brady said that GOP leaders are working with Trump and the White House on the tax bill.
"More and more we're trying to work things out together", Trump said, calling the development a "positive thing" for both parties.
House Speaker Paul Ryan is backing off months of promises that the Republicans' tax plan won't add to the nation's ballooning deficit.
There also was broad interest from all sides on crafting a net tax cut for middle-class families, which Toomey said the president is "adamant" about including in a tax reform package.
The analysis by the Tax Policy Center, a nonpartisan think tank, found Republicans might have to expand the federal budget deficit to cut the corporate rate to Trump's proposed 15 percent or to the 23 percent level sought by leading tax policymakers from Congress and the administration.