The Nathaniel Cade Series by Chris FarnsworthRead about another entry on the list.
A powerful vampire swears a blood oath to the office of the President, and has to work with a very young and very green White House employee to fight supernatural threats. I read Blood Oath, the first book in Christopher Farnsworth’s President’s Vampire trilogy, in between the idea for Nightshades and actually writing it, and thank goodness. Blood Oath and its sequels (please more books, Chris?) are the gold standard for how to do third person, procedural UF with plenty of action and intrigue.
The Page 69 Test: Blood Oath.