Jasper Helder, the chair of Baker & McKenzie’s Europe, Middle East and Americas international trade practice group, has joined Akin Gump Strauss Hauer & Feld’s London office, Akin Gump announced Thursday.

The move comes as companies face growing uncertainty about the future of cross-border commerce in the wake of the U.K.’s withdrawal from the European Union Donald Trump’s U.S. presidential victory.