Earlier quoted context omitted.
zero-bama?
It's a dog-whistle term. Politically neutral persons think it is a typo, but it is recognised by the anonymous poster's fellow associates, and marks the poster as someone they should upvote, endorse and agree with.
The net effect of his presidency will surely be near zero. While I don't agree with everything on the Trump agenda, much of it is long overdue.
Of most relevance to HN, I expect the economy to boom!