A public US university I'm familiar with is promoting an anti-racism initiative. As part of this initiative, a web article posted on the university's diversity web portal (which was advertised in an email newsletter to the university community) contains a list of suggested actions that employees and departments can take to advance the cause of anti-racism. One of the actions on the list is to support businesses owned by people of color. The recommendation is accompanied by links to various lists of black-owned businesses in the region.
Is it legal for a public US university administration to advise its employees to patronize businesses owned by people of a specific race, both in their private lives and in the transaction of official university business?