A pair of GOP senators are balking, because the bill only hikes the child tax credit by $100—a big backtrack from the Senate's previous bill.

WASHINGTON (CBS News) — Republicans say the hardest part is behind them now that they have crafted a compromise between the House and Senate tax bills. The final plan preserves deductions for student loans and medical expenses targeted in previous bills, and it doubles the standard deduction, which Republicans say will enable millions of taxpayers to stop itemizing.

“This relief gives people a simpler system, and a fairer tax code,” said House Speaker Paul Ryan (R-Wisconsin).

But residents of high-tax states could still get squeezed. The plan caps the deduction for state and local income tax plus property tax at $10,000 per year. It also lowers the mortgage deduction cap from new loans worth a $1 million to $750,000.

“It’s a monumental con job,” said House Minority Leader Nancy Pelosi (D-California).

Paul Ryan said the House and Senate had reached a compromise on the tax reform bill.

Republicans say they make up for those changes by lowering the marginal tax rate at every income level and by preventing the dreaded alternative minimum tax from hitting everyone but the highest earners.

“The tax bill got better! It didn’t get worse,” said Sen. Richard Burr (R-North Carolina).

But on Wednesday, a pair of GOP senators balked because the bill only hikes the child tax credit by $100 — a big backtrack from the Senate’s previous bill.

“Unless they can figure out a way to add to the $1,100 figure, I won’t support the bill,” said Sen. Marco Rubio (R-Florida).

“I think that Sen. Rubio will be there, very sure,” said President Trump, who called the tax bill a Christmas present.

Democrats argue it’s mostly a gift to big business, permanently slashing corporate tax rates from 35 percent to 21 percent without cutting many corporate loopholes.

The personal tax cuts, on the other hand, are temporary. And Obamacare’s individual mandate is eliminated, which could boost the number of uninsured Americans.

“This is being rushed to judgment, and the American people by substantial numbers believe this bill is not good for them,” said Rep. Steny Hoyer (D-Maryland).

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