I read an old thread here https://www.alternatehistory.com/forum/threads/wi-bush-orders-the-us-to-invade-sudan.110619/ discussing such a scenario and also opened a discussion myself in https://www.reddit.com/r/HistoryWhatIf/comments/9ehu5x/what_if_bush_invaded_sudan_instead_of_iraq/. In short, there are reports, that, in 2003 or 2004 when the Darfur conflict and genocide started, Bush wanted to invade Sudan but Condoleezza Rice talked him out of it. What if he gave up on invading Iraq and insisted on invading Sudan? He would have had a very strong case for invasion due to Osama bin Laden and Al Qaeda having been hosted in Sudan in the 90s and having had ties with the Sudanese government, the Sudanese government's relations with rebels and terrorists in general, a genocide going on in Darfur and the oppression of Christians in the South. How much support would there have been for such a war? Would this war have been more sucessful than the Iraqi?