daily basis have resulted in long lines and long wait times. 2018 confrontation On Sunday, November 25, 2018, groups of Central American migrants tried to forcibly cross the border into the United States. Some of them threw rocks at US Border Patrol agents, who responded by firing tear gas into the crowd which included families with small children. The firing of tear gas across the international border into Mexico was immediately protested by the Foreign Ministry of Mexico, which demanded a full investigation. Expansion project The San Ysidro Land Port of Entry Expansion Project is a bi-national effort between the United States and Mexican governments which aims for the demolition, relocation, expansion, renovation, modernization and construction of new administrative and operational facilities of the current land port of entry in the San Ysidro district of San Diego. The project calls for a complete overhaul of the current international border inspection facilities on both sides of the border at a total cost of about $625 million which includes $577 million for the expansion of the northbound U.S. point of entry and roughly $48 million (MXN $598) for the construction of an entirely new southbound Mexican point of entry. The project is being carried out in three phases: Phase I involves the expansion of northbound vehicle lanes, the implementation of dual primary vehicle inspection booths and a higher capacity secondary inspection facility. Phase II involves the demolition of the current administrative building and construction of bigger replacement along with a multi-story employee parking structure. A new pedestrian processing building will also be constructed. Phase III involves the relocation of the southbound lanes entering Mexico. These lanes will be moved west of their current location to make space for the planned expansion of new buildings, parking structure and extra northbound lanes. Their new location will allow for a southbound traffic checkpoint to facilitate U.S. officials to conduct inspection of vehicles heading to Mexico. Mexican officials will greet vehicles and occupants at a bigger and better equipped immigration and customs inspection station known as Puerta Mexico El Chaparral. After the completion of the expansion project, the total northbound lanes is expected to be 62 automobile lanes. This will also add 110,000 square feet of energy preserving and producing material. Not only is there an expected increase in lanes, but an increase in SENTRI efficiency. Construction 2011 On the U.S. side, construction of the new