presidents in American history"
And of course, the Affordable Care Act was hardly Obama's only accomplishment.
He passed a stimulus bill that included major reforms to the nation's education system, big spending on clean energy, and significant expansions of anti-poverty programs. He shepherded through the Dodd-Frank Act, the first significant crackdown on Wall Street's power in a generation, which has been far more successful than commonly acknowledged.
He used
executive action to enact bold regulations to curb green house gas emissions, and to protect nearly 6 million undocumented immigrants from deportation. He ended the ban on gay and lesbian service in the military, made it easier for women and minorities to fight wage discrimination, cut out wasteful private sector involvement in student loans, and hiked the top income tax rate.
He reopened
relations with Cuba after a failed half-century estrangement and has tentatively reached a historic deal to keep Iran from getting a nuclear weapon and, much more importantly, to avoid a war with Iran. He reprofessionalized the Department of Justice and refashioned the National Labor Relations Board and the Wage and Hour Division of the Labor Department into highly effective forces for workers' rights.
http://www.vox.com/2015/6/26/8849925/obama-obamacare-history-presidents