Former Republican Sen. Nancy Kassebaum Baker of Kansas, the first woman elected to the U.S. Senate without previously having a husband serve in Congress, died Friday at 94.Her son, Bill Kassebaum, told The Associated Press that she died of natural causes."She loved Kansas. She loved people from Kansas and representing Kansas for 18 years in the U.S. Senate," he told AP. "She was an independent-minded Republican who was willing to stand up for what she thought was right, even if that meant going against the party."Kassebaum Baker won election to the Senate in 1978 and served three terms before...