Any lawyer please chime in but if some judge says the states can break the if/then construct of a Federal grant, how would that mesh with Brown v Board of Education?
With the sanctuary cities, aren’t they in a way trying to reestablish “separate but equal” on their terms?
I saw this the other day - maybe it will answer your question:
Robert Barnes: Can Trump Legally Stop Sanctuary Cities? Yes. Remember Brown v. Board of Education
http://www.breitbart.com/big-government/2017/03/27/robert-barnes-can-trump-legally-stop-sanctuary-cities-yes-remember-brown-v-board-education/amp/