Before Lowenstein Sandler chairman and managing partner Gary Wingens joined with Paul, Weiss, Rifkind, Wharton & Garrison chairman Brad Karp to pen an op-ed for The New York Times Monday on the U.S. border crisis, both firms had prioritized immigration work as part of their pro bono advocacy.

But when President Donald Trump and members of his cabinet took the position that family separation—which came to an end with an executive order last Wednesday—was mandated by law, Wingens felt the need to speak out.