I believe we're witnessing the high water mark for "People should be able to do whatever they want, and it's none of my business."
Come hell, high water, or both, in shelters and at home, New Yorkers are ready.
The point is, at least he is willing to stand for something, come heck or high water.
(also high water pants or high waders or flood pants) Trousers that are shorter than current fashion dictates, esp that end above the ankles: Look at his high waters!
[fr the notion that the trousers have been chosen or rolled up for walking through high water]