The USHouse of Representativestook the first step to dismantling Obamacare on Friday, with the House voting 227-198 to repeal it.
The move to repeal President Barack Obama's landmark health insurance law came without any replacement policy ready.
The motion was not supported by Democrats and committees have been directed to draft legislation by January 27 to repeal the 2010 Affordable Health Care Act or Obamacare.
The law provided health insuranceto some 20 million Americans who are not covered by work but was hampered by arise in insurance premiums and deductables as well as nationalinsurers quitting the system.
House Speaker, RepublicanPaul Ryan,"The deductibles are so high it doesn’t feel like you’ve got insurance in the first place.
"We have to step in before things get worse. This is nothing short of a rescue mission," he said.
Trump on Friday morning tweeted"The 'Unaffordable' Care Act will soon be history!" He also pressured lawmakers to repeal and replace it "essentially simultaneously".
While campaigning for presidential election Trump had vowed to repeal Obamacare if he became president.
The resolution will need the president's signature and the approval of the House and Senate once the repeal legislation is drafted.
(WION with inputs from Reuters)