Pressure to “nuke” the Senate filibuster is rising among Democrats as they seek to legislate new policy on such divisive issues as voting, guns and abortion. Last week, even President Joe Biden joined the chorus calling for a “carve-out” in Senate rules to codify now-defunct Roe v. Wade protections. One argument put forth by party activists, writers and even Hillary Clinton points to their success in raising the debt limit in December 202...