It depends on how you define “openly”. In the immediate aftermath of the November election hundreds of colleges issued statements in support of President Obama’s DACA executive order which allowed children of undocumented families to continue their studies and to qualify for work-study grants while doing so. Since then, a lot of the conversation seems to have shifted to academic discussions about the meaning of the word, “sanctuary”. Some of the most awkward have taken place on campuses with the most to lose (potentially) in federal funding in case the current situation deteriorates even further; among them were Category I research universities (as defined by the Carnegie Foundation) such as Harvard, Yale, Princeton, NYU and Chicago.
Personally, I would add Columbia and the 23 campuses of the California State University system to the list:
Portland State University
The California State University System (CSU)
Reed
Wesleyan
Pitzer
Connecticut College
Columbia University
The University of Pennsylvania
Swarthmore
Oberlin