Let's take a stroll through Donald Trump's policymaking process on taxes, courtesy of Bloomberg News, shall we?

Months after the White House proposed ending a tax break for people in high-tax states, President Donald Trump grew angry when he learned that the change would hurt some middle-income taxpayers, according to two people familiar with his thinking.

This assumes there was "thinking."

Trump’s concerns led him to say this week that “we’ll be adjusting” the tax-overhaul framework, the people said -- but it’s not clear how he and congressional leaders would make up for the revenue that would be lost without ballooning the deficit or torpedoing support for the plan.

GOP lawmakers can't make up for that shortfall because they want to drastically cut taxes for the rich and corporations, which is why they resolved to effectively raise taxes for some 40 million taxpayers, many of them solidly middle class. They already scrapped their other scheme to raise revenue—Paul Ryan's border adjustment tax—because it so transparently would have negatively impacted American consumers across the board to pay for tax cuts at the upper end.