Republicans’ tax overhaul bill is set for final passage with no Democratic votes in the Senate or House, raising the risk that Democrats will undo parts of the legislation if and when they return to power.

In that respect, this week’s passage of the GOP tax bill parallels former President Barack Obama’s enactment of healthcare legislation in 2010, which garnered no Republican votes in the final version. The partisan bill helped create the Tea Party and gave rise to the Republican majority in Congress. With Tuesday’s vote, the GOP is now poised to undo a major part of Obamacare by zeroing out its individual mandate.