If their taxes are raised, they will either pass along that cost to the consumer, lay off workers or a combination of both. They have to remain competitive with other corporations from around the world without such high taxes.
I just can’t understand why Democrats are unable to see the irony of not supporting tariffs and at the same time supporting higher taxes on US corporations. Both initially result in higher costs for the consumer, but the main difference is that tariffs ultimately result in more US based businesses while higher US corporate taxes results in less. It is not complicated, but Democrats just can’t seem to figure it out.