How many illegal immigrants are allowed to stay in the U.S.? Who knows? The government doesn't. The Department of Homeland Security does not maintain data on how many illegals may remain in this country through prosecutorial discretion, according to the agency inspector general.

Who will be Hillary Clinton's "first lady" if she eventually succeeds in getting elected as America's first woman president? Hubby Bill presumably would hold the title of First Gentleman, but he's not likely to spend his time managing the social functions of the White House. Speculation is that role would fall to the Clintons' daughter Chelsea.

Earmarks -- a corruption of the appropriations process which allows members of Congress to bring home the bacon for constituents -- cost $4.2 billion in fiscal year 2015. So says the Congressional Pig Book, published by Citizens Against Government Waste to highlight pork barrel spending by lawmakers.