Loskarn is on leave without pay, and Alexander says his office is fully cooperating with the investigation.

It wasn’t long ago that things were looking rather good for Loskarn. A former staff director of the Senate Republican Conference, he was on Roll Call’s 2009 “Fabulous 50 Movers and Shakers” on Capitol Hill list. He became Alexander’s chief of staff at the end of 2011. Before then, he was the staff director of the Senate Republican Conference for more than two years and worked in the House as an aide for seven years for various Republican lawmakers.