Republican calls president 'derelict' in duty: 'This is not Ellis Island, this is an invasion' Author Pat Buchanan says President Bush should be impeached for failing to stop the invasion of illegal aliens across the U.S. border with Mexico. "I think he's committed an impeachable offense in refusing to enforce the immigration laws and in failing to uphold the Constitution by defending the states against this invasion," Buchanan told radio talk-show host Curt Smith this weekend on National Public Radio stations in upstate New York. "When you have 6 million people apprehended on the border and several million got in...