President Donald Trump announced Wednesday he planned to hit Brazil with a 50% tariff, in part due to the treatment of its former president and his political ally, Jair Bolsonaro.

In a letter posted to his social media account, Trump said he was making the change “due in part to Brazil’s insidious attacks on Free Elections, and the fundamental Free Speech Rights of Americans.”The Brazilian real slumped as much as 2.

President Donald Trump announced a 50% tariff on goods from Brazil—the highest rate he has announced since he began announcing new levies this week in letters on social media—directly citing the country’s ongoing prosecution of former President Jair Bolsonaro, which he referred to as an “international disgrace” and a “witch hunt.”