Democratic U.S. Sen. Alex Padilla, of California, on Monday visited the Tijuana River Valley Wastewater Treatment Plant on the U.S. side of the border to announce that $300 million has been budgeted to stem the flow of raw sewage from Mexico into California. The money is part of the U.S.-Mexico-Canada trade agreement, which set aside money to clean up the environment along the southern border. During heavy storms or when facilities in Tijuana break down, millions of gallons of raw sewage flow downhill into the U.S. side of the border in the Tijuana River Valley and out to sea, contaminating miles of Southern California beaches.