Here is the logic of MAGA fiscal policy.
The Big Ugly Bill cut taxes for billionaires and corporations, but it reduced government revenue.
The government still needs money for subsidies for big business. They still need to award huge sweetheart contracts to favored businesses. There also needs to be a lot of money available for Trump and his cronies to siphon off.
How do you raise more money? Not from something progressive like the income tax. You need a regressive tax. Something like a national sales tax or tariffs. But you can do something which is an obvious tax increase.
This is all part of a "rob the poor to help the rich" policy. Perfect reverse Robin Hood.