Trump Plays the Birther Card on 'Canadian' Cruz in Latest Twitter Attack

US Republican candidate and billionaire Donald Trump said that another Republican presidential candidate Ted Cruz should verify his citizenship.

WASHINGTON (Sputnik) — US Republican presidential candidate Ted Cruz has to either clarify his citizenship or drop out of the presidential race, Republican candidate and billionaire Donald Trump warned on Twitter on Monday.

"It's time for Ted Cruz to either settle his problem with the FACT that he was born in Canada and was a citizen of Canada, or get out of race," Trump said.

It's time for Ted Cruz to either settle his problem with the FACT that he was born in Canada and was a citizen of Canada, or get out of race

— Donald J. Trump (@realDonaldTrump) January 25, 2016

​Since nearly the start of the presidential race, Trump has attacked the Texas senator for being born in Calgary, Canada and has continuously asked him to verify his eligibility to run for US president.

Cruz, however, has stated that his mother was a US-born citizen, and even went so far as to renouncing his dual Canadian citizenship in 2014, according to media reports.

Real estate tycoon Trump, a front-runner in Republican presidential race, has been notorious for making controversial statements about immigration, religion, race and gender equality.

According to the US constitution, an American president has to be a native-born citizen of the United States.