Three times this week, authorities have arrested suspected immigrant smugglers who jammed up to 16 people into minivans and hauled them through the Colorado mountains, apparently in search of jobs elsewhere.
In the latest case, two people were arrested and 14 people were turned over to immigration authorities today.
Their minivan held up traffic by crawling along Interstate 70 near the Eisenhower Tunnel.
It turned out to be stolen out of North Carolina.
In another case, four people were killed when their van ran off the highway in a snowstorm.
The drivers in all three cases could be charged under a new state law that makes it illegal to transport illegal immigrants for money.
Federal and state authorities are working together to decide who should prosecute the alleged smugglers.