When I printed my MIchigan Tax MI-1040 using Turbo Tax it printed my federal 1040 too. Do I mail in the federal 1040 form with my MI-1040?

Yes, you should include a copy of your federal return with the Michigan return when you mail it.

When I printed my Michigan return to mail it, Turbotax did NOT print a federal 1040 to send with it.  It also did not list it in the “What you need to mail” section of the instructions.  I wonder why it didn’t this year?