President Donald Trump, the author of the best-selling book, "The Art of the Deal," is about to see his deal-making abilities ratified in a legislative showdown on the House floor - or dramatically rebuffed.
Trump, in a message relayed by White House officials, demanded that House Republican leaders vote Friday on a GOP-backed health care bill embraced by the president, placing the legislation on the brink of failure and jeopardizing his vow to repeal and replace former President Barack Obama's health care law.
