Back in September, at the height of the Hillary emailgate investigation, Clinton's IT aid who helped setup her private email server, Bryan Pagliano, apparently decided that Congressional subpoenas, like federal record retention laws, were merely optional suggestions that did not require compliance.  As such, Pagliano elected to skip not one, but two, Congressional hearings in front of Jason Chaffetz' (R-Utah) House Oversight Committee despite his direct involvement in setting up he private servers.

The move did not sit well with Chaffetz, Chair of the House Oversight Committee, who blasted Pagliano's move saying that "subpoenas are not optional” and subsequently voted to hold Pagliano in contempt of Congress. 

As it turns out, after all these months, Chaffetz is still not over Pagliano's aloof response to his committee's subpoena and has sent a letter to Trump's new Attorney General Jeff Sessions asking him to convene a grand jury or bring charges against Pagliano for his failure to appear before Congress.  According to Fox News, Chaffetz said in a statement that allowing Pagliano's conduct "to go unaddressed would gravely harm Congress' ability to conduct oversight."