Donald Trump has called for a ban on all immigrants "where there is a proven history of terrorism" against the West as he outlined a new migrant ban as part of an aggressive response to the deadly terror attack in Orlando.

The presumptive Republican presidential candidate also suggested some Muslims in the United States were turning a blind eye to terror plots.

He has earlier stated that President Barack Obama may not be taking tougher action against terrorism because he may sympathise with the perpetrators of attacks such as the Orlando nightclub massacre that left 49 Americans dead.