He should be censured by the Senate.
For what? Criticizing a co-equal branch of government?
He threatened retaliation against two (2) specific Justices. Why? What those two? Did Thomas, Alito, and Roberts suddenly become locks to uphold
Roe?
What, exactly did "reaping the whirlwind" mean
as it applied explicitly to Justices Kavanaugh and Gorsuch? Schumer's later explanation doesn't wash. He was speaking of two (2) specific Justices appointed by a specific President; why only those two?
The principle of Separation of Powers requires that Schumer explain why he aimed his comments at two (2) specific Justices, and what whirlwind he would bring to bear against those two Justices, personally. Or, he just needs to apologize and admit that his hatred of Donald Trump got the better of him, and he said something he shouldn't have in a public setting. But this statement isn't "criticism". It's not a crime, and it's pretty hamhanded if he thought he was actually going to change anything regarding Justices with life tenure. But it WAS an assault on Separation of Powers. Censure is an appropriate sanction.