Back in November, Sen. Joe Manchin (D-WV) pledged that if Democrats won control of the U.S. Senate, he would block any attempt to pack the Supreme Court or kill the filibuster.
The context here is crucial. Manchin made this pledge on Fox News right after the presidential election. At that point, it was pretty clear Joe Biden would become president and Democrats would hold the House of Representatives. It was also clear that the then-upcoming January 5 runoffs in Georgia would determine control of the U.S. Senate.
So what Manchin was doing was reassuring everyone that if Democrats won those runoffs and seized control of the Senate (and it now looks as though this has indeed happened), he would be the bulwark against the insanity of packing the Supreme Court and killing the filibuster.
What Manchin said was especially meaningful because all it takes to block that madness in a