On April 30, legislators in the United States Congress included $100 million for the Caltrain electrification project in the proposed 2017 federal spending bill, which was signed into law by President Trump on May 6. The $100 million represents the federal funding for fiscal year 2017 of the total $647 million grant, with the balance expected in future years. Secretary Chao claimed she could not sign the grant without the full grant being budgeted, which was disputed by Caltrain and both California Senators Dianne Feinstein and Kamala Harris. On May 22, the FTA announced its intent to sign the funding grant, restoring the final piece of funding for the electrification project. The official grant was finally signed on May 23, and Caltrain broke ground for the Peninsula Corridor Electrification Project on July 21, 2017 in a ceremony attended by local and state officials at the Millbrae station. In December 2018, it was reported that Caltrain was again behind schedule in installing PTC for the rail corridor, and had requested a two-year extension.