When the Louisiana congressional delegation publicly demanded a staggering $250 billion from the government to rebuild the Gulf Coast after Hurricane Katrina, the move completely backfired. It angered G.O.P. conservatives, who then spent the next two months pushing for cuts in the budget and ignoring Louisiana and Mississippi. But then Mississippi Republican Thad Cochran got tough on behalf of his state. In a closed-door meeting last December, several Republican Senators were talking about how to pass quickly a key bill that would provide money for the Defense Department so lawmakers could head home for the holidays. Cochran simply announced that "this bill won't pass" unless it includes money for the Gulf Coast.

America's Best Senators Those who do, and don't, make a difference in the U.S. Senate The Best Senators Thad Cochran Kent Conrad Dick Durbin Ted Kennedy Jon Kyl Carl Levin Richard Lugar John McCain Olympia J. Snowe Arlen Specter The Worst Senators Daniel Akaka Wayne Allard Jim Bunning Conrad Burns Mark Dayton From the TIME Archive Nov. 5, 1979 The Kennedy Challenge More than a quarter century ago, TIME covered the presidential campaign of Senator Ted Kennedy, "the last of the Kennedy brothers, the youngest, the most vulnerable, the most thoroughly political"

On Katrina, Cochran, along with other Gulf Coast lawmakers, created a detailed list of the region's essential needs that totaled about $35 billion. He then had dozens of meetings with other lawmakers, emphasizing how badly the region needed the money but never publicly blasting Congress for moving too slowly. In the end, he got $29 billion out of his colleagues, almost double the money Bush and Congressional leaders had initially pledged.

Cochran, first elected in 1976, is often overshadowed in Washington by the junior Senator from his state, the ambitious and often controversial Trent Lott. But Cochran, 68, has carved several niches for himself, including becoming one of the few Senators well versed on farm policy. "He doesn't get a whole lot of play in terms of coverage," says a senior G.O.P. Senator, "but he is effectively stubborn doing what needs to be done."