An expected U.S. hiring boom crashed into a wall in April, with employers adding a measly 266,000 new jobs – sharply missing Wall Street’s expectations – amid a growing shortage of available workers. The unemployment rate unexpectedly rose to 6.1% — while it’s still well below the April 2020 peak of 14.7%, it’s about twice the pre-crisis level, the Labor Department said in its monthly payroll report, released Friday morning.