Trump's base: Why isn’t it crumbling?

Donald Trump was an unlikely presidential candidate, whose confidence was unbounded. He once boasted, " I could stand in the middle of Fifth Ave and shoot somebody and I wouldn't lose any voters." Now he's president, with a substantial base of supporters still behind him -- despite scandals, legislative failures and public comments that divide the nation. Overall support is declining, but few fellow Republicans have been willing to call him out — fearing a backlash from those hard-core devotees. That's political reality in the short run, but how long will it last?  We'll look at the consequences for the GOP as the electorate is relentlessly changing.