Trump punishes blue states and rewards red ones. This is clear in his immigration policies, the new census question and his efforts to block the Gateway rail project.
Now, he is using transportation grants to reward his voters and punish the rest. This Wall Street Journal article states:
“Some $314 million of those grants, or 64% of the total, will go to projects in rural locations, defined as those outside areas with 50,000 or more residents. About 19% percent of the U.S. population lives in those rural areas.”
All presidents are partisan but I don’t recall one who has been this vindictive.