Where's The Do Not Fly List When We Need It?

OK, it's Crazy News Day apparently.

So, a local software consultant has been convicted of "sexually groping" the thigh of a fellow passenger on a flight from Las Vegas to Chicago.   He was convicted by a Federal jury after a 3 day trial in Chicago.   But wait, there's more.

The guy was seated between a woman (in the window seat) and the woman's husband (aisle seat) for this flight.   The woman planned to sleep during the flight and woke up several times when feeling something on her leg.  The third time, she woke to discover the guy's hand up the leg of her shorts, at which point the woman "struck" the consultant and yelled at him.  Fellow passengers and flight attendants on the 2011 Southwest Airlines flight also testified.     But wait there's more.

It appears that the offender has been convicted twice before for virtually identical crimes.   In 2000, he pleaded guilty in Cook County Court to groping the breast of a passenger in the seat in front of him on a flight from Detroit to Chicago.  In 2002, he was convicted in Federal Court in Detroit for groping the breast of a fellow passenger on a flight from San Jose to Detroit.

So, we have a secret "No Fly List" in this country.  If your name gets on this list, you're banned from boarding flights, allegedly because you might be a terrorist and harm people.  So if we already have this list, why isn't this jerk, a serial sexual groper with three convictions on his record, banned from flying anywhere?   He's a clear and present danger to female passengers.  How many felony convictions are required before you get jail time?