It takes about 10-11 years for an average person it gain American Citizenship. Ches ran in the Kenyans trials so he probably stopped the process on becoming an American citizen. If he restarts it and commits to being solely an American he May have a chance to get it done sooner. He will never make a 5k, 10k or marathon Olympic team for Kenya. Ethiopia and Kenya are the hardest teams in to make in distance running in the world. He is a very good runner but he’s not top 1%. The PRs to hit those teams has to be 12:50 or faster, 26:50 or faster and the marathon is even tougher: 2:03 or faster. Forget it, that will never happen. He tried racing their trials in Kenya and got his butt handed to him. So he can decide to try to race for Kenya and never make a world or Olympic team or denounce them and go all in for America. Either way, good luck with that.