Sen. Chris Murphy (D-Conn.) forcefully pushed back on Supreme Court Justice Samuel Alito’s claim that Congress does not have the authority to regulate the judicial branch, calling Alito’s comments “stunningly wrong.”

“It’s just stunningly wrong. And he should know that more than anyone else because his seat on the Supreme Court exists only because of an act passed by Congress,” Murphy said Sunday during an interview on CNN’s “State of the Union.”

In an extensive interview published by the Wall Street Journal Friday, the longtime justice dismissed the Democratic-led effort to design ethics rules for the Supreme Court.