"To refer to someone who's standing up for the flag and all it represents to hundreds of millions of Americans and all it signals to the world, our veterans, our unity, the sounding of our great nation — to call that a political stunt is truly outrageous, egregious, and offensive," Conway told Fox News' "Fox and Friends."
"After all the scandals involving unnecessarily expensive travel by cabinet secretaries, how much taxpayer money was wasted on this stunt?" Schiff wrote about Pence's travel from Las Vegas to Indianapolis and back to Los Angeles.
Conway said the trip "was on the books" prior to the vice president's decision to visit victims of the Las Vegas mass shooting, and that President Trump had told him in advance to leave the game if players took a knee.
Pence added that he left because he and Trump "will not dignify any event that disrespects our soldiers, our flag, or our national anthem."
Trump said Monday that Pence is winning rave reviews for his decision to walk out of an NFL game after players kneeled during the national anthem.
"The trip by @VP Pence was long planned. He is receiving great praise for leaving game after the players showed such disrespect for country!" Trump tweeted Monday morning.