Illinois Gov. J.B. Pritzker on Monday fired off a letter to President Joe Biden about an “untenable” migrant crisis in the state, calling for an overhaul to the system and blasting the White House for a “lack of intervention and coordination at the border.”

Pritzker, a Democrat, said the state’s resources were beyond strained after Texas officials bused more than 15,000 migrants to Illinois in the past year.

“Unfortunately, the welcome and aid Illinois has been providing to these asylum seekers has not been matched with support by the federal government,” Pritzker wrote. “Most critically, the federal government’s lack of intervention and coordination at the border has created an untenable situation for Illinois.”