CHICAGO (CBS) — Chicagoans rallied at a Near West Side park Sunday to show support for DACA, the Deferred Action for Childhood Arrivals program that faces an uncertain future.

DACA was authorized under the Obama Administration. President Trump’s harder stance on illegal immigration could mean the end of the program.

The Trump Administration has postponed a decision until Tuesday, which could impact nearly 800,000 people.

Earlier, U.S. Sen. Dick Durbin highlighted a bipartisan measure he is sponsoring to help “Dreamers” who could face deportation, should DACA go away.

Standing in front of Federal Plaza Sunday, Durbin, D-Illinois, told reporters about a paramedic in Houston, Jesus Contreras, who has been on the front lines, helping save lives in that city’s historic floods.

Contreras came to the U.S. as a little boy, just six years old, from Mexico. If the “Deferred Action for Childhood Arrivals” program is eliminated, Contreras could be deported, Durbin says.