Actually, FDR failed in his attempt to “pack” the Supreme Court with additional New Deal-friendly justices. The Senate must confirm appointments then as now, and his subversive scheme was too much even for the Democrat controlled Congress of the late 1930’s.
Doesn’t diminish FDR’s record as an enemy of the Constitution, and at which LBJ nearly succeeded decades later.
Yes, FDR made a fool of himself with his plan to state the Supreme Court with pro-big federal government justices, a plan which failed.
However, Constitution-ignorant voters re-elected FDR enough times that he was able to nominate an activist justice majority who saw things his way.