Why your summer getaway is staffed by foreign workers

At the tip of Cape Cod, the iconic summer getaway Provincetown has a small year-round population that swells when the weather gets nice, welcoming an estimated 4 to 5 million tourists every year. Businesses there depend on foreign workers willing to work just a few months of the year. But this year, the number of available visas is way down. Economics correspondent Paul Solman reports.