Elon Musk mocked 'sleeping' Biden for not congratulating SpaceX's all-civilian crew

• Elon Musk made fun of President Joe Biden for not congratulating SpaceX's Inspiration4 crew.
• Musk said Biden was sleeping instead - evoking Donald Trump's "Sleepy Joe" nickname for Biden.
• Musk also responded to a tweet attacking Biden and the United Auto Workers (UAW) union.

Elon Musk made fun of President Joe Biden on Sunday, alluding to former President Donald Trump's nickname for Biden, "$4."

A Twitter user asked why Biden had not yet congratulated the crew of SpaceX's Inspiration4, the world's first all-civilian space mission. The crew $4 after orbiting the Earth for three days.

"He's still sleeping," Musk replied.

-Elon Musk (@elonmusk) $4

Musk's jibe alluded to the derogatory nickname Trump used for Biden during the 2020 presidential election.

Musk also responded to a meme on Twitter that appeared to attack the Biden administration's relationship with unions.

The meme showed a scene from the film "Alien." In the meme, a parasitic alien clamped onto a person's face was labelled "UAW" (United Auto Workers) and the person labelled "Biden."

Musk appeared to agree with the meme, commenting "seems that way," $4

Musk last week criticized a Democrat-led bill that would give a $4 He claimed, without evidence, that lobbyists for the UAW and Ford had written the bill.

Tesla has historically opposed unionization, and in March the National Labor Relations Board $4 and re-hire a fired union activist. Tesla $4 in April.

Biden $4 at an August White House event that showcased electric vehicles. Musk $4 at the time: "Seems odd that Tesla wasn't invited."

Musk also said in February that he'd spoken to the Biden administration about the possibility of introducing a carbon tax, but that the administration had $4.