AUSTIN, Texas (AP) - In finishing the Republican presidential race well ahead of Donald Trump's other rivals, Ted Cruz is likely to be a leading GOP voice for the foreseeable future. Less clear is whether Cruz harnesses that clout to help Trump win the White House or whether he simply solidifies his place as a champion of conservative causes, Senate troublemaker and star of Texas politics. Cruz is being talked about as a leader of the national conservative movement, and he has an unmatched organization in Texas....