Apparently, the Colbert Nation maintains a strict policy on immigration. At Stephen Colbert's reading and book signing at the Union Square Barnes and Noble in Manhattan Wednesday night, the faux pundit and allegedly real presidential candidate effectively shot down the "Missile Dick Chicks."

Sparkle and Cybil War, two Colbert fans and members of a theatrical anti-war group whose members dress up as patriotic Texas oil baronesses with patriot missile strap-ons, waited patiently in line for an hour to get their books signed. With their bras worn fashionably over their shirts (the better to complement their red and blue fishnets and boas), American flag bandannas, and silver patriot-missile appendages, they livened up the perfectly controlled mass at B&N. But when they reached the final phase of the line to Colbert, Sparkle said a store manager approached and told them that Mr. Colbert didn't want them coming up on stage to get their books signed, as hundreds had that night. "We were told that if we went on stage we would be arrested," she said in a fake Southern drawl.

A kinder, gentler B&N employee then approached the women with gratis Colbert books and offered to get them autographed for them, saying "then you'll be free to go."

Randi Cecchine, the Chicks' documentarian and friend, asked Colbert about the incident when she got her perfunctory 20-book-signing-seconds with him. Colbert didn't seem to know who the Missile Dick Chicks were, and quipped, "You should call the ACLU on that."

Sparkle, who loyally watches The Colbert Report thrice weekly, said she and Cybil War had no funny business planned for their encounter. "The irony is, we were just going to go up there, have him sign the book, and maybe sing a verse of 'This Land is My Land.'"

A Barnes & Noble rep had gone home for the night Wednesday and has not yet responded to requests for comment. Store reps on the scene also declined comment.