McAllen (AP) – Federal authorities have awarded a $145 million contract to a Texas company to build six miles of wall along the U.S.-Mexico border in the Rio Grande Valley. U.S. Customs and Border Patrol said Friday that SLSCO will begin construction of an 18-foot reinforced concrete levee wall in February in the agency’s McAllen Station region. It will be the first section of President Donald Trump’s border barriers in the Rio Grande Valley, the busiest corridor for illegal crossings.