President Donald Trump frequently casts his first year in office as a string of successes and campaign promises fulfilled. But less than a quarter of Americans think Trump has made good on the pledges he made to voters while running for president, according to a new poll by the Associated Press-NORC Center for Public Affairs Research. Among Republicans, just half say Trump has kept his promises, which included vows to overhaul his predecessor’s health care law, withdraw the United States from a nuclear accord with Iran and invest millions in new projects to fix the nation’s aging infrastructure. None of...