My point is this, no company needs to consider moving overseas if the TAX and REGULATION policies are low and reasonable respectively.
For instance, Letting Carrier KEEP THEIR OWN MONEY, rather then have the State of Indiana and the Federal government tax it away from them is a VERY Conservative position.
We should all applaud it, and we ought to encourage policies like these everywhere in this country.
For this situation, odds are that Carrier split the baby, choosing to keep one part in the US and retool the plant and send the rest (and likely growing) part to Mexico to make up for the extra costs of the US plant.
In the long run, the main thing that can be done to prevent companies from fleeing is to make it attractive to continue operating here in the USA, and other than using the power of tax incentives and reasonable regulations, I can't think of any other ( Tariffs are a tax on consumers and are not something I like ).