Biden received two federal contracts from the Department of Homeland Security for the “lease/rental of other federal buildings.” The contracts cover April 1, 2011 to Sept. 30, 2017, and they add up to $171,600. This was the $2,200 per month the Secret Service paid to rent a cottage on the Bidens’ Wilmington, Delaware, property so that agents could be there on-site to protect the vice president.
https://www.aei.org/op-eds/joe-biden-also-profited-off-the-secret-service-it-was-also-wrong/