‘[T]his year, the grey clouds of ‘Tax Day’ have a silver lining. Today is the last time American families will have to file under the unfair, outdated tax code that Congress and the president got rid of a few months ago... Republicans’ historic overhaul cut taxes for families and small businesses. We doubled the standard deduction, expanded the child tax credit, and lowered rates. And we accomplished all this while preserving key middle-class provisions, like the mortgage interest deduction.’