Who will Investigate/Prosecute This Crime ?

Dr. Ben Carson Spends $37k on Office Décor, without Congressional Approval, in Violation of Federal Law -
https://www.nytimes.com/2018/02/27/us/ben-carson-hud-furniture.html?smid=tw-nytimes&smtyp=cur
Meanwhile, the White House circulated its plans to slash HUD’s programs for the homeless, elderly and poor, according to federal procurement records.

MAGA, Anyone ?