For clarity, the question is asking whether I will be stopped at the border when I enter the US after going back in 2025 (so when I come back after leaving in June 2025, for example).

The upper limit you can stay on a visiting visa is 6 months in a year, but it's informally strongly recommended one not come close to that limit. The last time I visited, I stayed from 11 January 2024 to 5 May 2024, and I've heard advice both ways on whether that's long or short relative to how close you can get.

Related market that decides the conditional on this market: https://manifold.markets/Jozdien/will-i-be-stopped-at-the-border-com