Federal agents set up shop in New Hampshire last week. They ran a Constitutionally-illegal checkpoint, violating the Fourth Amendment rights of countless Americans.

The big reward? They arrested 25 illegal immigrants, seven of them children. More than half of those detained had overstayed visas. That means they came to the U.S. legally in the first place and did not leave when their visa expired.

What could have spurred this callous disregard for the law? Well, a personal anecdote could shed some light on the situation.

A friend of mine from Brazil had a six-month visiting visa to the United States. He would come and stay with his uncle who had permanent residency. The way the rules work, it that my friend could use the visa as often as he wanted to travel to the United States, but couldn’t stay for longer than the six month period.

It was literally completely legal for him to fly to Brazil, spend the night, and fly back to the United States the next day. Then he could stay for another 6 months.

Being a rule follower, he did what the law said and flew back to Brazil where he stayed for about four months. The ticket to get back to the U.S. cost about $1,000. But when he arrived, he was denied entry to the United States. He was sent back to Brazil, and his visa was suspended for five years.

Why did this happen? After all, he followed all the rules. Officials said if he was staying 6 months at a time, he must have been working. Yes, because he stayed within the legal limits of his visa, the federal officials surmised that he must have violated the conditions of his visa.

Read more at The Daily Bell.