FORMER US vice-presidential candidate Sarah Palin has lent her support to Republican prsidential hopeful Donald Trump.

The ultra-conservative Tea Party leading light told a campaign rally in Iowa — which will become the first state to select a candidate in two weeks — that “media heads are spinning.”

The former Alaska governor and unsuccessful 2008 running mate to sabre-rattling Senator John McCain said that with Trump as president the US would no longer apologise.

Dubbing President Barack Obama the “capitulator in chief,” Ms Palin said Mr Trump would “let our warriors do their job and go kick Isis’s ass!”

Property billionaire main Trump’s rival Texas Senator Ted Cruz said: “Regardless of what Sarah intends to do in 2016, I will remain a big, big fan of Sarah Palin.”

Mr Trump has repeatedly played the race card in his campaign, even questioning Canadian-born Mr Cruz’s legitimacy as a presidential candidate.