This story was originally published by Grist and is reproduced here as part of the Climate Desk collaboration. With much of the southwest baking under record temperatures, immigrants’ rights advocates worry President Joe Biden’s decision to effectively close the border to asylum seekers for the foreseeable future will endanger lives and further marginalize climate-displaced people seeking refuge in the US. Their concerns come as a heat dome lingering over Mexico and the southwestern United States has obliterated temperature records from Phoenix to Sacramento.