The sweeping tax legislation Republicans in Congress are trying to send to President Donald Trump to sign into law underscores a striking evolution in the party’s economic agenda: away from tax policy that prioritizes economic growth and toward populist giveaways inspired by Trump’s campaign promises.

There’s an undercurrent of Democratic support for elements of President Trump’s tax agenda, a dynamic that Republicans are trying to exploit as they make the case for enactment of their sprawling domestic legislation.