Since talking about it on Morning Joe earlier today, a few people have asked me to expound on my theory regarding what Jeb Bush would have to do to overcome the many challenges he would face on his way to the Republican nomination. It seems clear that Bush is hell-bent on not pandering to the base, so the obvious challenge he will have to overcome is winning a Republican primary while holding some positions (immigration reform, Common Core, etc.) which are anathema to the grassroots conservatives who will comprise a decent chunk of the primary electorate. The way to overcome...