The conservative Club for Growth is putting six figures behind a new television advertising campaign to pressure Georgia Republican Rep. Buddy Carter to oppose the reauthorization of the U.S. Export-Import Bank.

The 30-second spot calls the obscure federal agency, which offers taxpayer-backed loans and loan guarantees to foreign buyers of American exports, a “petri dish of corruption and graft” and urges Carter’s constituents to phone the freshman GOPer to ask why he would support it when the nearly the entire field of would-be Republican presidential hopefuls oppose it.

“Republican leaders—Bush, Walker, Rubio, Cruz, Paul—all want to eliminate [the agency],” a narrator says. “Tell Congressman Carter to join conservatives and end the Export-Import Bank.”

If no action is taken by Congress, the agency’s operating charter is slated to expire June 30. But it’s not just conservative groups hoping Congress will allow the bank’s charter to sunset. Atlanta-based Delta Air Lines is among the bank’s most vocal corporate critics.

The same group opposed Carter in the last year’s open primary to succeed former Rep. Jack Kingston in the first congressional district.

The new Carter ad is one of four identical spots the Club is airing. Watch it after the jump.