Teens not working doesn't work for America

Here's a trend that may not bode well for the future of our country: According to data from the Bureau of Labor Statistics, only 40 percent of 16- to 19-year-olds have summer jobs - down from 75 percent of teens a generation ago.

As it goes, according to the NerdWallet website, teen summer employment has been declining for decades. Why?

One reason is that jobs typically tailored for teens are eith...