In 2023, the share of scientific publications involving international collaboration in Human-Computer Interaction in the US was not explicitly given. However, based on the forecasted data, there's a steady increase in collaboration from 2024 to 2028, starting at 17.51% in 2024 and reaching 18.18% by 2028, showing a consistent upward trend.

Future trends to watch for include:

Enhanced global partnerships driven by technology advancements.
Growing interest in interdisciplinary research contributing to international collaboration.
Potential policy shifts towards promoting collaborative research post-2028.