The Trump administration will end key cost-sharing subsidies under the Affordable Care Act, as President Trump looks for ways to dismantle his predecessor's signature law without the help of Congress.

Speaker Paul Ryan on Tuesday afternoon emphatically ruled out a presidential run or accepting the Republican nomination.

Addressing the nation four days after a shooting in San Bernardino, California had unnerved Americans, President Obama pledged Thursday that the homeland would be protected, and urged Congress to take action on several fronts.