Donald Trump Twitter-threatens to sue Ted Cruz for not being a natural-born citizen

Donald Trump this afternoon issued a Twitter-threat to sue Ted Cruz over his Canadian birth unless the Texas senator doesn’t “clean up his act.”

If @TedCruz doesn’t clean up his act, stop cheating, & doing negative ads, I have standing to sue him for not being a natural born citizen.— Donald J. Trump (@realDonaldTrump) February 12, 2016

Trump’s birther gambit was an embarrassing fail when he tried it against President Obama. Will it succeed against Ted Cruz?

Trump was quick to question Cruz’s eligibility to run for president because he was born in Canada to an American mother. Trump raised the question back in March 2015 when Cruz announced his campaign, and then brought it up again in January.

UPDATE: Trump supporters have already filed a lawsuit against Cruz.