A conference called Greening Borders at University of San Diego hopes to look at U.S.-Mexico environmental issues in a new light. Organizers expect more than 100 people to attend.

The 16 year old girl was apparently helping her mother set up a food stand early Tuesday morning.

Today marks the 15th anniversary of Operation Gatekeeper. That's the U.S. border enforcement policy that tried to discourage people from crossing the U.S.-Mexico border illegally in San Diego and pushed them east into the desert and mountains.

Four people, including a U.S. citizen, have been arrested in connection with a shooting at the San Ysidro border crossing Tuesday. Federal agents shot at three vans loaded with undocumented immigrants as they supposedly tried to run through the port.

San Diego law enforcement authorities say they've dismantled a Mexican drug trafficking ring that operated in San Diego and killed nine people.

Mexican authorities say a man they have in custody has been identified as the gunman who killed a Border Patrol agent east of San Diego last Thursday night. KPBS Reporter Amy Isackson has the story.

Tijuana merchants who cater to tourists are worried Mexico's plan to screen all cars headed south into Tijuana will be another blow to their business. They estimate sales have dropped 80 percent since the 9/11 terrorist attacks. KPBS Reporter Amy Isackson has more.

Gunmen shot up the Red Cross in Tijuana Tuesday morning. As KPBS Reporter Amy Isackson explains a Tijuana policewoman died in the hail of bullets.

$21 million in federal stimulus funds will go toward remodeling the Otay Mesa border crossing. Officials say this will pay for land and design costs.

The Director of Mexico's Federal Migration Institute says she's pleased President Barack Obama favors good policy over short term politics on the issue of immigration reform. As KPBS Reporter Amy Isackson explains, Cecilia Romero made the comments during a talk at the Institute of the Americas in La Jolla.