President Donald Trump has given himself a "10" for his response to the widespread devastation Puerto Rico suffered after back-to-back hurricanes.

US President Donald Trump highlighted Puerto Rico's relatively low death toll compared with "a real catastrophe like Katrina" as he saw for himself the devastation caused by Hurricane Maria.

Donald Trump came face to face with hurricane-ravaged Puerto Rico today after denouncing critics of the federal relief effort as "politically motivated ingrates" who need to step up their own response to the crisis.

Donald Trump is due to meet some of the 3.4 million Puerto Ricans struggling to recover from Hurricane Maria.