About 50 college students who are in the U.S. illegally have marched on Kansas Secretary of State Kris Kobach’s office urging him to stop working on immigration laws and to do his state job.

The students from Kansas and Arizona delivered a letter Tuesday to a staff member, who said Kobach was in his office but unable to meet with the students.

The students are members of the DREAM Act Coalition. The DREAM Act would create a citizenship path for residents who were brought to the U.S. illegally as children.

Kobach is a Republican and former law professor at the University of Missouri-Kansas City. He has helped shape immigration policies around the country, and continues to litigate immigration issues in other states while serving in his Kansas position.