President Donald Trump's interaction with Russian President Vladimir Putin was a "disaster," "detrimental to the country" and the strongest evidence yet that "the president (should) step down."Those are the words of former New Jersey Gov. Christie Whitman, a Republican, who penned a blistering op-ed in the Los Angeles Times this weekend calling on fellow GOPers to put country over party and dump Trump."In this election year, opposing Trump is risky for GOP candidates," Whitman wrote. "Invoking the need to choose country over party is an overused trope. But it is essential now." The piece was a reaction to Trump's refusal last week...