Grassley swiped at the channel for airing "Pawn Stars," which follows a family-run pawnshop in Las Vegas that handles some antiques.

If u don't like history now is time to go HISTORY CHANNEL and u can watch PAWN STARS — ChuckGrassley (@ChuckGrassley) December 29, 2016

Hurry Hurry watch some history on History Channel before it disappears for something not so historical — ChuckGrassley (@ChuckGrassley) December 25, 2016

Grassley has complained about the more than two-decade-old cable network in years past. In 2012, the theme around non-history-related content was also voiced on Twitter.

Ocassionally I turn to History channel hope to c history. Whenevr will the history channel hv a real old fashion histry program — ChuckGrassley (@ChuckGrassley) January 7, 2012

Just love history. So occasionally I turn to history channel. "mud cats" when wi they put history back on the channel — ChuckGrassley (@ChuckGrassley) February 26, 2012

Turned to history channel. No. HIstory again — ChuckGrassley (@ChuckGrassley) March 11, 2012

History. No history. Axe man Timber Nothing historical. Back to FOX. Sigh. Suggest name to change channel name — ChuckGrassley (@ChuckGrassley) March 19, 2012

The History Channel finished 2016 ranked ninth on the ratings front for all cable networks. It has added reality programming such as "Pawn Stars" and "Ice Road Truckers."