WATCH: Packed highways and flight issues ahead of Fourth of July

Millions of Americans are on the move ahead of the Fourth of July holiday on what’s expected to be one of the busiest days for drivers.

​Millions of Americans are on the move ahead of the Fourth of July holiday on what’s expected to be one of the busiest days for drivers.   Millions of Americans are on the move ahead of the Fourth of July holiday on what’s expected to be one of the busiest days for drivers.