GOP came for abortion rights. Medicare and Social Security could be next.

President Joe Biden last week slammed two Republican senators for proposing to end Social Security and Medicare as we know it. First, Biden renewed his attacks on Florida’s Rick Scott, who has called for all government programs, including Social Security and Medicare, to be reapproved every five years. The president then ripped Wisconsin’s Ron Johnson for recently proposing a vote each year to determine if Social Security and Medicare would be funded.

As Scott, chair of the National Republican Senatorial Committee, writes in his “11-Point Plan to Rescue America,” “If...