Get rid of all anti-discrimination law, in favor of a positive discrimination law. That means, instead of saying "you may not discriminate against people on the basis of race, gender, ethnicity, nation of origin, religion, etc." it would say, "you may discriminate only on the basis of ___" and include things that you would want to legitimately discriminate against, like hygiene (no shoes, not shirt no service), being properly clothed for a nice restaurant, and others I can't think of. But make it super simple, and not create so much division.

Cut all social programs, close the border, let some natural selection take place, then resume social programs later, and allow immigration.

Reinstate a corps of civil engineers instead of contracting out to the private sector, which inevitably goes over budget and over its alloted time.

Abolish all forms of "non-profit" tax benefits across the board. Churches, universities, charities, you name it. Non-profit status is probably the most abused thing in the country.

Get rid of pennies, nickels, and dimes, or just slice a decimal off of the currency. (I know that isn't simple, but I'm having fun with my imagination).

Make businesses in my state include sales tax in the pricetags!

Withdraw completely from the Middle East, all troops, all aid, and say "fuck it, let them kill each other if they want."

Make a deal with China. Say we'll withdraw our military from the Korean peninsula, in exchange for you overseeing Kim Jong Un's abdication and Seoul taking control of the reunified peninsula. Then let China, Korea, and Japan deal with their own neighborhood.

But anyway, thanks for the thought experiment. I think I might like being a dicatator a bit too much...

Don't let me be dictator.