Tom Steyer, the billionaire hedge fund manager and environmentalist who has been pushing for President Trump’s impeachment, will not be running for president in 2020.

Steyer, 61, whose “Need to Impeach” petition to oust Trump from the White House has amassed almost 6.7 million signatures, won’t contest the Democratic Party’s presidential nomination, spokeswoman Aleigha Cavalier told the Washington Examiner.