WASHINGTON — The government on Saturday suspended enforcement of President Donald Trump's refugee and immigration ban and scurried to appeal a judge's order, plunging the new administration into a crisis that has challenged Trump's authority — and ability to fulfill campaign promises. The stand-down, a day after a federal judge in Washington state temporarily blocked the ban, marked an extraordinary setback for the White House. Only a week ago, the president had acted to suspend America's refugee program and halt immigration to the U.S. from seven Muslim-majority countries that the government said raise terrorism concerns.