There's a reason every company the government memes responds with a strongly worded Instagram post and then goes quiet. A 1960 law made the federal government the one entity in America that copyright can't stop. DHS posted "Transformers: Age of Deportation" this week. Optimus Prime, ICE across his chest. Hasbro responded within a day saying the posts were made without permission, and that statement is basically the whole arsenal. Under 28 U.S.C. § 1498(b), a copyright holder can't sue the…