While Elon's ex was against their son at the White House with him, Trump seemingly approved of his presence.
Before the press conference, Elon's initiative to decrease the federal workforce under the Department of Government Efficiency (DOGE) was discussed, and he complimented X in front of reporters and on camera.
"This is X, and he's a great guy -- high IQ," he shared in a video obtained by NBC News. "High-IQ individual."
In addition to X and his other children with Grimes, Elon has nine other children from previous relationships. The Tesla CEO lost his first child, Nevada Alexander Musk, in 2002.