President-unelect Rick Santorum made his triumphant return to the Capitol on Monday afternoon and took up a brave new cause: He is opposing disabled people.

Specifically, Santorum, joined by Sen. Mike Lee (R-Utah), declared his wish that the Senate reject the U.N. Convention on the Rights of Persons With Disabilities — a human rights treaty negotiated during George W. Bush’s administration and ratified by 126 nations, including China, Russia, Iran, Cuba, Syria and Saudi Arabia.