Americans have been urged to shelter in place following the death of a top cartel leader known as "El Mencho."

San Ysidro business owners say Sunday's violence in Tijuana led to a noticeable slowdown in customers, adding to what has already been a difficult stretch for shops along the border.

This story was originally published by CalMatters. Sign up for their newsletters. The killing of one of Mexico’s most-wanted cartel leaders triggered violent reprisals across the country and experts warn it could lead to prolonged destabilization that pushes more people to flee for the U.

Cervantes says the foam seeps into the ground tainting aquafers and wells in the valley.

The vast number of users are willing to cross as a group in one car to split the cost,” he said. “There was talk the price was too high, but when you can split it by up to four

"Unfortunately when we talk about border crossings, we always say it wasn't that bad before, the lines weren't as long, but with the population increases in both Tijuana and San Diego County, this has become part of life.

"What I saw today is the people of California are being poisoned.”

The monthly membership plan allows multiple workers to share vehicles, cutting costs and wait times for early participants.