Apple, Coca Cola, JPMorgan fear Trump's visa policy will harm US economy

Vague and unpredictable Trump administration immigration policies threaten the US economy amid a tightening labour market, CEOs from major American companies have warned.

In a letter to Department of Homeland Security Secretary Kirstjen Nielsen on Thursday, the Business Roundtable urged a rethink of recent directives from Washington that have thrown the status of workers into doubt and are damaging the recruitment of talent.

"Few (workers) will move their family and settle in a new country if, at any time and without notice, the government can force their immediate departure -- often without explanation," the roundtable said in the letter. "At a time when the number of job vacancies are reaching historic highs due to labour shortages, now is not the time restrict access to talent."

The Business Roundtable represents most of the biggest US companies. The group has criticised the Trump administration before on immigration, while praising the White House for cutting taxes and regulation.