GOP presidential front-runner Donald TrumpDonald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE on Tuesday mocked Sen. Ted CruzRafael (Ted) Edward CruzThe Hill's Morning Report - Sponsored by Facebook - Trump previews SCOTUS nominee as 'totally brilliant' Cruz blocks amended resolution honoring Ginsburg over language about her dying wish Trump argues full Supreme Court needed to settle potential election disputes MORE (R-Texas) for mistakenly calling Florida his home state.

“His home state is not Florida, it is Texas,” he told host Anderson Cooper during a CNN townhall in Milwaukee.

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“It might be Canada,” Trump quipped, mocking Cruz’s birthplace. 

“He didn’t even know what state he comes from. Fort Hood is from Texas by the way. I am so surprised, Anderson, that you let him get away with it.”

Cruz accidentally called Florida as his home state while discussing a 2009 mass shooting at Fort Hood, Texas.

“My home state of Florida — Fort Hood,” Cruz said when discussing the military base located in Killeen, Texas.

Cruz was discussing radical Islamic terrorism, citing the attack by a Muslim U.S. Army major and psychiatrist nearly seven years ago.

Nidal Hasan was convicted of killing 13 people and wounding 32 others after he admitted he had opened fire at the military installation.

“I am the shooter,” he said during his court-martial in August 2013.