It is some kind of carrots or stick that Trump will be offering. One hand he will reduce corporate taxes to 15 % but on the other he announced consequences for those who leave the USA. Unclear is if the new or modified tax laws will remove current tax gaps.
Trump Warns US Companies: There Will Be 'Consequences' for Leaving
This has nothing to do with Trump.
Both the GOP and the DEM's agree that US corporate taxes need to be reduced to be competitive with other nations. They are both talking about 20% to 25%.
Trump has mentioned 15% which is actually quite brilliant since it would make the US competitive with Singapore and Ireland as well. I agree with Trump on this.
I doubt that the DEM's will give-in to a 15% rate however. 22 1/2 % is more likely as a compromise.
To equalize the lost revenues Congress and Trump will need to come up with a special Subpart F tax on companies like Apple, Microsoft, Walmart, etc. who hide foreign earnings in Ireland now.
However the GOP may want another "W" Bush type 5% repatriation dividend tax.
You have no idea how taxation works, especially not corporate.
So don't stick your nose where you are blind dumb.