President Trump Donald 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 said Monday he has buried the hatchet with his 2016 presidential rival Sen. Ted Cruz Rafael (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 (Texas) ahead of a campaign rally for the Republican lawmaker in Houston.

“He’s not Lyin’ Ted anymore. He’s Beautiful Ted,” Trump told reporters at the White House before departing for Texas.

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Trump said, "I like Ted" and asserted the Texas senator has locked down his tough reelection race against Democratic Rep. Beto O’Rourke (Texas), whom the president called "a highly overrated guy."

Despite his kind words on Monday for Cruz, Trump said he does not regret some of the harsh attacks he leveled against his onetime GOP primary opponent in 2016.

"I don't regret anything, honestly," Trump said. "It all worked out very nicely."

Trump once claimed that Cruz's father, Rafael, helped John F. Kennedy assassin Lee Harvey Oswald and threatened to "spill the beans" on the senator's wife after posting a photo of Heidi Cruz beside his wife, Melania.

But the president has rallied to Cruz's side as the senator has been forced to fend off a challenge from O'Rourke, who has raised tens of millions of dollars and attracted national attention as he tries to become first Democrat elected statewide in the Lone Star State since 1994.

An O'Rourke victory could jeopardize the Republican majority in the Senate. But polls show Cruz has surged over the past months and holds a 7-point lead over O'Rourke, according to the RealClearPolitics average.

Trump had promised to hold a rally for Cruz at the "biggest stadium" in Texas, but Monday night's event is being held at the Toyota Center in Houston, which seats roughly 19,000.

The largest stadium in Texas, Texas A&M's Kyle Field, holds more than 102,000 people.

The Cruz rally was moved to the Toyota Center after originally being scheduled at NRG Arena, which holds about 8,000 people.

Updated at 3:55 p.m.