The treasury secretary says he has "serious issues" with whether the request is proper.
The Treasury Department won't be able to meet House Democrats' deadline of Wednesday to hand over President Donald Trump's tax returns, Treasury Secretary Steven Mnuchin said.
In a letter to Rep. Richard Neal, D-Mass., chairman of the Ways and Means Committee, Mnuchin said the Treasury was continuing to review Democrats' request in light of its "serious issues" about whether the request is proper.
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