Welcome to Trail Guide, your host through the wilds of the 2016 presidential campaign. It's Thursday, Feb. 18, and here's what we're talking about:
- Donald Trump flouts the laws of campaigning once more and other GOP forum takeaways
- At a competing Democratic town hall, Bernie Sanders is quizzed on how he'll fix the broken immigration system
- Hillary Clinton demonstrates her deep knowledge of U.S. immigration law
- Trump on being called out by Pope Francis: It's "really not a nice thing to say"
- Marco Rubio and Bush are staying out of that fight
- Political analysts are scratching their heads over the Democratic race in Nevada