WASHINGTON (AP) — The Export-Import Bank expires Tuesday at midnight for the first time since the small federal agency was created during the Depression to help U.S. businesses export their products. The federal Export-Import Bank's principal role is to guarantee commercial bank loans made to foreign businesses to buy U.S. products. Opponents, including conservative lawmakers, groups like the Heritage Foundation and the GOP's presidential candidates, say it isn't needed at all. "Where is the fairness in giving Washington politicians and bureaucrats the power to pick who gets helped and who gets hurt?" asked GOP Rep.