The U.S. government has increased tariffs on many Brazilian goods by more than 50%, but Lula and Trump discussed reaching a potential deal during a meeting in Malaysia in October.
The paramilitary Rapid Support Forces reportedly killed more than 450 people in a hospital and carried out ethnically targeted killings of civilians while seizing el-Fasher last week.
The North Korean leader has previously shown little interest in renewed diplomacy with President Donald Trump, who met with him three times during his first term.