The Obama administration has not responded to a demand from senators for details on the immigration history of dozens of U.S. residents arrested on terror-related charges.

Republican Sens. [crscore]Ted Cruz[/crscore] and [crscore]Jeff Sessions[/crscore] identified 72 U.S. residents charged with terror-related crimes in the past year and sent the Obama administration a letter in August requesting details on their immigration histories. They provided an incomplete chart with the letter, and asked the Obama administration to fill it in by Sept. 4, but have received no response.

“It is quite telling that this Administration — which seems to have unlimited resources to circumvent our immigration laws and further its executive amnesties — cannot find the time or resources to provide timely answers to these simple questions,” Sessions and Cruz wrote in a joint statement Tuesday.

“Moreover, after this past weekend’s barbaric attacks in Paris, the Administration’s continued insistence on pursuing the massive resettlement of countless individuals from unstable areas of the world reveals a flagrant disregard for the safety and security of the American people,” they continued.

They had asked for details, such as citizenship status, the date of naturalization and the immigration status of the parents of those residents publicly charged with terror crimes. (RELATED: USCIS Is Marketing Citizenship To Fight Homegrown Terror)

“In just the last year, refugees and other migrants admitted to the U.S. from Bosnia, Somalia, Sudan, Saudi Arabia, Uzbekistan, Kazakhstan, Ghana, Kuwait and Bangladesh have been implicated in terrorist activity,” they said in the statement.

The suspects are part of a growing number of U.S. residents charged with conspiring to help, attempting to help, or actually helping terror networks such as Islamic State, in some cases by attempting to leave the country and join ISIS or by trying to provide material support. (RELATED: Another New Jersey Homegrown Terror Suspect Arrested)

The terror attacks in Paris Friday that left 129 dead were suspected to have been planned by a Belgian citizen now living in Syria, and were carried out by at least one ISIS militant posing as a Syrian refugee.

Republicans in Congress and governors are moving to block President Barack Obama’s plan to admit at least 10,000 Syrian refugees into the United States in the next few years as part of an expansion of the U.S. refugee program.

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