Maybe, maybe not - I think ABC used to carry that a a singular race of the year, unless a failing memory is making that up. I do think though, that if the not interested in F1 were to chose to watch a F1 race it would be Monaco - If FIA and Liberty want to promote F1 in the US, they can do a lot worse than promoting the heck out of Monaco.
Austin
Miami
Las Vegas
To most will just be another race, if anything is said or mentioned on the channels they watch, most will think it was an Indycar race.
Trouble is, if that is the only race they watch, then they could be put off F1 forever. You can't hide the fact that it is a damn poor place to try and run an F1 race.