Breitbart writes, Oversight Committee Chairman Darrell Issa sent a letter to Acting Treasury Secretary Neal Wolin over contracts awarded to Signet Computers because there is a personal relationship between the owner and an IRS contracting official. In 2012, Signet Computers was given almost $500 million in federal contracts and the majority were with the IRS. They received two Blanket Purchase Agreements (BPA) worth $380 million in December. However, Signet Computers never had federal contracts before this one, and Issa wants to know how they managed to gain these expensive contracts without a history. Issa…