Cathey Park of Cambridge, Massachusetts wears a cast for her broken wrist with “I Love Obamacare” written upon it prior to U.S. President Barack Obama’s arrival to speak about health insurance at Faneuil Hall in Boston October 30, 2013. REUTERS/Kevin Lamarque President Donald Trump is ordering federal agencies to undermine Obamacare through regulatory action, a move that could weaken enforcement of the requirement for Americans to buy health coverage and give insurers leeway to drop some benefits.