President Biden pushed back Monday in opposition to Republicans and business groups who say intensified unemployment benefits are discouraging Americans from working, defending his economic prescriptions and stating that his administration would make clear that people cannot turn down suitable jobs and keep collecting benefits, except in certain circumstances.The US economy poised for rapid growth this year as vaccination rates climb and consumer and business activity picks up, spurred in part by a flood of federal aid. But Friday’s uninspiring employment report has caused concerns among policy makers that a shortage of workers could restrain the pace of the recovery. US employers added a seasonally adjusted 266,000 jobs in April, the labor Department stated, a sharp lockdown from the previous month and well under the one million jobs economists anticipated to see. A separate report indicated that there were 7.4 million unfilled jobs in the US.