President Donald Trump has signed an executive order formalizing his announcement earlier this week that he’ll freeze assistance to South Africa for a law aiming to address some of the wrongs of South Africa’s racist apartheid era.

US President Donald Trump signed an executive order Friday targeting South Africa over what his administration and allies allege are human rights violations stemming from a land expropriation law, escalating his dispute with the country.

South African President Cyril Ramaphosa responded on Monday to US President Donald Trump’s threat to cut off aid over the alleged mistreatment of White farmers, denying Trump’s claim that authorities were “confiscating land.