The Republican-controlled House has passed legislation letting insurance companies sell individual coverage to all comers, even if it falls short of standards set in "Obamacare."
The vote was 261-157, and came after GOP lawmakers said the bill would ease the plight of millions of consumers reeling from cancellation notices.
The White House threatened a veto if the measure eventually reaches President Barack Obama's desk.
The vote came Friday as Obama arranged a meeting at the White House with insurance company CEOs, and as the industry and state insurance commissioners began adjusting to an abrupt change in policy he announced a day earlier.
Some Senate Democrats seeking re-election in 2014 are leading a move for generally similar legislation.
Bill Enyart joined 38 other Democrats in voting for the bill. Republican John Shimkus also voted in favor of the proposal.
(Copyright 2013 by The Associated Press. All rights reserved.)