Former Congressman Joe Walsh officially announced his candidacy for the 2020 Republican nomination today, vowing to defeat incumbent President Donald J. Trump."Friends, I'm in. We can't take four more years of Donald Trump. And that's why I'm running for President. It won't be easy, but bravery is never easy," Walsh tweeted. "But together, we can do it.""We have someone in the White House who we all know is unfit. Someone who lies virtually every time he opens his mouth," he stated in his campaign video. "We cannot afford four more years."Since exiting Congress, Walsh has been in the news for...