The rise in US steel and aluminium tariffs to 50% is the second time since March that Donald Trump has taken action to protect production of the metals in the US.

She also called the U.S. announcement to raise the metals' tariffs to 50% from the 25% introduce in March an "unfair measure" during her morning conference, citing the free trade agreement Mexico and Canada share with the United Sates. Sheinbaum however said that Mexico's response would not be "an eye for an eye."

Mexico will announce new measures next week if no agreement is reached regarding the US's recently increased tariffs on steel and aluminum.