It’s always dangerous to divvy up the spoils of war before achieving victory, but the GOP’s congressional leadership appears to be moving in that direction anyway. So confident they will take the majority in the House and probably the Senate in Tuesday’s midterms, key members have been quietly plotting how to make life difficult for the Biden administration, particularly on its radicalized economic agenda. Sure, even in the best-case scenario (winning both chambers), Republicans will face long odds pushing through new legislation. They still need President Biden’s signature and will likely lack a ­veto-proof majority in the Senate. Yet people...