However, the plans for an electrified Caltrain were put in jeopardy in February 2017 by the Trump administration when US Secretary of Transportation Elaine Chao decided to indefinitely delay granting the federal funding for the Caltrain electrification project that had been approved by the Obama administration. One month later, in March 2017, the American Public Transportation Association (APTA) sent a letter to Secretary Chao calling the Caltrain delay "concerning." In more than two decades, the APTA wrote, "no project has failed to secure final signature after successfully meeting evaluation criteria." In February 2017, Caltrain fired Parsons Transportation Group and sued them for delays in designing the custom technologies necessary for the PTC system. They then went on to sign a contract with Wabtec, who would offer them the industry-standard PTC system.