Like... "Friends and Neighbors with All," or "Sisterhood and Brotherhood," or "Make America Love Again," or "United, not Bipolar... much less Multipolar!" Or even slogans like "Decency!" or even "Back to Normal!" Maybe, "Steady the boat... and we'll do the smooth sailing." Or how about, "America, Apple Pie and Chevrolet... :)"
I think it would be a winning strategy for the fragmented state of ideologies still yearn to come back to the unity and a common identity that made America great...
Make your own boring slogan. And any thoughts are welcome. :)