In what appears to be a violation of the federal ethics rule that prohibits a government employee from using "his public office for his own private gain, for the endorsement of any product," Ajit Pai, the controversial new chair of the FCC, tweeted and subsequently deleted praise for Amazon's PrimeNow service.

"Needed something in pinch and decided to try @amazonprimenow. Very impressed! Item was cheap and arrived early. May not leave the house again," Pai posted to on his official FCC Twitter account, only to delete moments later.