U.S. job growth likely picked up in January, supported by fewer layoffs in some seasonal industries, but the labor market remained sluggish as lingering uncertainty over import tariffs tempered hiring and tighter immigration enforcement constrained the supply of workers. The Labor Department's closely watched employment report on Wednesday is also expected to show the unemployment rate steady at 4.4% last month and annual wage growth cooling. Economists said the Trump administration's trade and immigration policies have chilled the labor market, though they expected tax cuts to boost hiring this year.