Moise Katumbi, the chairman of Congo's premier football team and a presidential candidate, has not set foot in the country for a year.
Etienne Tshisekedi, the longtime opposition leader, died in February.
Etienne Tshisekedi was the man with the experience to lead Congo to elections in 2017. After his death, they are in doubt.
The majority want him to leave when his term ends in December, but he says elections will be delayed until 2018.
Kabila has been accused of trying to stay in power by delaying elections in Congo.
Elections scheduled for November look likely to be delayed until at least July 2017.
The judge claims the government wants to cripple Katumbi's political ambitions.
The 83-year-old politician has opposed successive governments and says he'll run again in 2016.