Here's an up-to-date graphic on current maximum speed limits in the US.

Illinois just increased to 70 mph yesterday. A bill is being proposed to bring Wisconsin to 70 mph. NJ lawmaker wants 75 mph on the Turnpike and Parkway. A Michigan senator is considering increasing their speed limit as well, possibly to 75 mph. On the other hand, a Nevada 85 mph bill and North Carolina 75 mph bill got shot down this past year. We shall see if the 65 mph states increase to 70 mph to be more continuous with the rest of the country... How is your state speed limit? Should it be increased?

P.S. - Not sure if I'm allowed to do this, but if you want to keep up-to-date on Interstate speed limit increases across the country and see information supporting higher, more reasonable speed limits, check out this awesome page: