Busy first day also includes installation of Mattis as Defense Secretary, Kelly as Homeland Security Secretary.
New president aims to reduce ‘economic burden’ of Obamacare.
Signs legislation allowing former Gen. Mattis to lead Pentagon, nomination papers.
Battle over health care expected to be one of Congress’ biggest battles.
Says in weekend interviews he’s nearing completion of a plan to replace Obamacare.
Vermont senator urged Americans to resist efforts to repeal Obamacare.
Attorney General defends Justice Department's intervention in local law enforcement.
Justice Dept. inspector general investigating FBI Director James Comey and the department.
Budget prevents Democrats from using a Senate filibuster to derail a bill.
2015 spill released 3 million gallons of tainted wastewater into Colorado rivers.