Former Sen. Jeff Flake (R-AZ) says he will not be casting his vote for President Donald Trump in 2020, citing concerns he had with the president before the 2016 campaign. “I just couldn’t support [Trump] long before he started to run. The birtherism thing was just too much for me. And then it piled on,” Flake, a vocal critic of Trump, told the Washington Post. Flake also warned that a second Trump term could deter younger voters from the GOP, especially on issues concerning the environment and immigration. “So for young people who’ve grown up around minorities or had a...