Inside the wild $25 million fight to oust top GOP Trump critic Thomas Massie

The Republican primary in Kentucky's 4th district has become the most expensive U.S. House primary in history, with over $25 million spent on ads. The race between Rep. Thomas Massie and Ed Gallrein has turned into an all-out war of inflammatory accusations and savage insults. Both candidates have attacked each other on social issues, including diversity and immigration.