Grassley was saluting Iowan artist Grant Wood and looked remarkably similar to the original male subject of the portrait.
“If you’ve been following me and my comments on the History Channel, not having much history on the History Channel -- I decided I’m going to do what I can to promote history," Grassley said. "So I have what you call the real history channel, which is on my Instagram and Twitter."
Grassley said the images aren't always in Iowa and cited a piece of land Abraham Lincoln received as payment for a legal fee before he became president.
"Last year there was some land that was given to Abe Lincoln for payment for legal services he did before he was president – so there are two plots of land we had our picture taken by and there’s a little historical mention of that at each one of those places," he continued.
Grassley said the American Gothic photo was meant to bring attention to Wood's other works and serves as a thorn in the side of the History Channel.
"I think it brings attention to the artist number one, Iowans are proud of him. He’s made a big impact on agriculture," he told Fox News.
"It also reminds people of one of the outstanding examples of his paintings is the husband and wife in front of this home, and it’s a tourist stop as well."
"We are trying to let people know that I like history and that this History Channel is not really [the] History Channel anymore," Grassley added. "And I like to have fun with this crusade of mine against the History Channel."