I can put us on a path to solve climate change in 3-5 years:
1. Federal loans/subsidies for nuclear energy, opening of Yucca. There are two nuclear power plants that can be completed in short order - the one in Georgia and the other one in South Carolina.
2. Reforestation through 3 main methods:
a. We end the ethanol mandate for fuel and use farmland currently used to grow corn (and which is depleting our water table) to restart forestation
b. The locally-grown movement must end. It is not a good use of land to grow massive amounts of broccoli/tomatoes/peppers in the Great Lakes region, just like we don't grow apples in Louisiana. Use farmland more efficiently. The locally-grown movement is a farce and destroys forests.
c. Acquire land around already-protected state and national parks to extend their boundaries, especially on our coasts. Also, many golf courses are barely used. They need to be returned to nature.
d. Let the market develop for bio-engineered food, including meat. My neighbor is a biochemist and believe me, you will be eating lab-grown burgers soon. Then reforest pasture land.
If Trump wants an issue to unite people on, he can start with Points 1 and 2c above. The rest are probably too controversial at this time.
And guess what? They do not require much in the way of new taxes, if any.