Arizona Sen. Kyrsten Sinema joined a growing chorus of elected officials calling on the Biden administration to quickly address the surge of migrants at the U.S.-Mexico border.

Sinema joined Texas Republican Sen. John Cornyn in a letter to president Joe Biden on Monday. It calls on Biden to pour resources along the U.S.-Mexico border and to improve the asylum process. 

It also calls on the administration to improve collaboration both with its own various agencies as well as nongovernmental organizations that have helped to care for migrants at the border. 

And it calls for migrants in custody to be afforded full due process, including legal orientations before starting the asylum process.