Claudia Sheinbaum has twice persuaded Trump to postpone tariffs. The low-key scientist’s success is helping her step out of her predecessor’s shadow.

President Donald Trump has postponed 25% tariffs on many imports from Mexico and some imports from Canada for a month amid widespread fears of the economic fallout from a broader trade war.

Mexican and Canadian officials are increasingly frustrated by tariff negotiations with the Trump administration, with a lack of clarity over exactly what the U.S. wants making any resolution seem impossible,