Jeb Bush says Obama shift on Cuba undermines U.S. credibility

By Gabriel Debenedetti WASHINGTON (Reuters) - Potential Republican 2016 presidential candidate Jeb Bush on Wednesday criticized the White House's move to restore diplomatic ties with Cuba, calling the shift a "dramatic overreach" of President Barack Obama's executive authority. "Cuba is a dictatorship with a disastrous human rights record, and now President Obama has rewarded those dictators," Bush, the former governor of Florida, a key state with a large Cuban-American population, said in a sta