The U.S. economy added far more jobs than expected in March, but President Donald Trump's sweeping import tariffs could test the labor market's resilience in the months ahead amid sagging business confidence and a stock market selloff. Nonfarm payrolls increased by 228,000 jobs last month after a downwardly revised 117,000 rise in February, the Labor Department said in its closely watched employment report on Friday. Economists polled by Reuters had forecast payrolls advancing by 135,000 jobs after a previously reported 151,000 rise in February. Estimates ranged from 50,000 to 185,000. The unemployment rate rose to 4.2% from 4.1% in February. The labor market is being underpinned by low layoffs, generating solid wage gains that are helping to sustain the economic expansion.