Why is this not a great national issue of enormous debate? Why is there so little visibility? everytime i see a list of voter related issues, housing is never mentioned.Good question, but I think the answer is that it's simply not a national issue. In New York City, you can bet that it's a campaign issue across local politicians, and it's in the news weekly. Also, it's not true that one 'can't build' in NYC due to regulations. While there are regulations (as one would expect of a highly densely populated city), there's plenty of building. The price of land, however, is obscene.
Meanwhile, that $1M condo that's one bedroom apartment you purchased in Manhattan (in Manhattan it's probably small) or even the $800K 2 bedroom you purchased in Brooklyn (in a cheaper part of Brooklyn, like Bed Stuy or Bushwick), you could live like a Sheikh in a place like Omaha, NE or (perhaps) Dallas, TX.
Hotpots like SF, NYC, Boston and so on - the smaller, dense cities with jobs and no land left - no so much.
It's not a national issue. Everyone wants to live in California because you get nice weather, high salaries and cannabis edibles rain from the sky. You're a victim of your own success.