U.S. Rep. Jason Crow was denied entry to a federal immigration detention facility in Aurora over the weekend in apparent violation of federal law, the congressman’s office said.

The U.S. Department of Homeland Security says it requires requests to tour ICE detention facilities be submitted at least seven calendar days in advance for scheduling.

Democratic Rep. Jason Crow was denied entry to an ICE center, citing a violation of federal law. ICE insists on seven days' notice, sparking a debate over oversight.