Yes, Americans speak American English. I didn't include Kansas, as they have Southern inflection.
All the rest I mentioned speak properly, according to dictionary pronunciation rules. New Yorkers and New Englanders do not.
Broadcasters either have or learn the Midwestern speech pattern. I would say that despite everything I hate about Hitlary...she has no accent.
Tell that to the crowd here!
Unbelievable. There is no Chicago accent. And the moon is made out of cheese.