Senate Majority Leader Mitch McConnell (R-Ky.) says President Obama will veto any ObamaCare contingency plan Congress sends him, even if the Supreme Court cripples the law.

Congressional Republicans are working on backup plans in case the high court rules later this month in King v. Burwell to invalidate subsidies that help 6.4 million people afford health insurance in 34 states using the federally run exchanges.