Republican leaders have begun a bid to overturn the healthcare law signed by US President Barack Obama in 2010.
A bill to repeal the landmark law was formally unveiled on Monday evening, two days before Republicans assume control of the lower house of Congress.
It is set to be voted on by the House of Representatives on 12 January.
But the vote is expected to be largely symbolic as Democrats retain a Senate majority and can block the move and the president could ultimately veto it.
Typical Republican wasteful stall tactic. Instead of a genuine effort to sit down with Democrats and Independents to potentially amend the bill, which is in need of alterations, Republicans would rather thump their chests. Instead of cooperative productivity in our government the Republic House will persist in ploys of obstructionism to score political points with their glossy eyed Republican base.