Days before the 13th anniversary of the Sept. 11 terror attacks, elected officials from New York called on Congress to reauthorize federal legislation to compensate first responders who became ill working at ground zero.

On Monday, standing in the shadow of the nearly completed One World Trade Center, Democratic U.S. Sen. Kirsten Gillibrand led the bipartisan push to renew the Zadroga Act, which provides medical treatment and compensation for the workers.

The Zadroga Act, named after a responder who died after working at ground zero, became law in 2010. Its two components — a victims compensation fund and a medical treatment fund — have paid out more than $1.1 billion.

The two main components of the law are set to expire in 2015 and 2016.