And yes, I've used many (most?) of these myself. Forgive me Language, for I have sinned.
  1. My fellow Americans...
    Imagine if we greeted each other with the phrase, "People who share my nationality, hello!" Same thing.
  2. Let me be clear:
    Who's stopping you, pal?
  3. Middle-class families who work hard and play by the rules
    Do better than a 25 years old Clintonism. Also, can anyone name a single rule?
  4. I say to you today:
    Or you could just say it
  5. I believe America's best days are still ahead
    Really going out on a limb there, huh?
  6. I want to reach across the aisle
    The only time anyone ever uses the word aisle is in reference to their seat on an airplane
  7. It is time to come together
    Everyone, all at once
  8. Build a better future for the next generation
    Blah blah blah blah blah blah
  9. We can do better
    Yes, we can (zing)
  10. God Bless you, and may God Bless the United States of America
    I'm sure He was on the fence until you said that, so thanks for putting in a good word
  11. Four score and seven years ago...
    Just say "87 years ago" you elitist.
    Suggested by @Nicholas
  12. "Can I ask you a question?" -you'll need two, buddy!
    Suggested by @HubertLubert
  13. But at the end of the day...
    Suggested by @alibaron
  14. "Everyday Americans"
    As opposed to, you know, every other day Americans.
    Suggested by @Igor