David Welch is a former research director for the Republican National Committee.

IT is a shame that William F. Buckley Jr. passed away in 2008. The conservative movement could use him — or someone like him — right now.

In the 1960s, Buckley, largely through his position at the helm of National Review, displayed political courage and sanity by taking on the John Birch Society, an influential anti-Communist group whose members saw conspiracies everywhere they looked.

Fast forward half a century. The modern-day Birchers are the Tea Party. By loudly espousing extreme rhetoric, yet holding untenable beliefs, they have run virtually unchallenged by the Republican leadership, aided by irresponsible radio talk-show hosts and right-wing pundits. While the Tea Party grew, respected moderate voices in the party were further pushed toward extinction. Republicans need a Buckley to bring us back....