The Tax reform package has reduced corporate welfare. Lobbyists from various business groups want to see their favorite deductions preserved. For example, the real estate and mortgage lending groups (banks) want to see mortgage interest to remain deductible.
But the tax reform package has put a cap on how much mortgage interest can be deducted from your income. So this bit of corporate welfare has been reduced. There are other deductions that the reform package reduced or eliminated, according to this article, "GOP is right to ridiculous deductions in tax plan"
. But it did not elaborate.
The proposed bill caps the tax deduction for mortgage interest, which does not benefit the economy, does cost the government a lot of money (which again, must be raised some other way, such as through higher marginal tax rates) and pushes up the price of housing, particularly in more affluent areas.
Too bad for banks and real estate companies, including Trump's property companies. it could lead to a decline of property prices in New York.
These two proposals are complemented by a number of equally salutary, though less well-known, reforms on the business deduction side.
So there are other deductions that amount to corporate welfare but the author did not identify them. The second deduction mentioned in the article is the deduction of SALT. But this does not amount to corporate welfare tbough it will reduce income in places like NY and possible have an adverse effect on Trump's property prices.