US President Donald Trump's use of the Guantanamo Bay naval base to house migrants appears to cost $100,000 (₹85 lakh) per day for each detainee, Democratic US Senator Gary Peters said. Peters questioned Homeland Security Secretary Kristi Noem about the high cost, far more than $165 (₹14,000) per day in US immigration detention facilities. "That's kind of outrageous," Peters added.