A top Senate Republican said on Tuesday he would fight President Barack Obama's choice for commerce secretary, former energy executive John Bryson, whom he called an "environmental extremist." "The president has appointed someone who is going to make it harder and more expensive for the private sector to create jobs," said Senator John Barrasso, a member of the Senate Republican leadership. "Instead of appointing an economic leader, he has appointed an environmental extremist," Barrasso said. He cited Bryson's support for climate change legislation that failed to clear the Senate and his role in the founding of the National Resource Defense...