Let's say you hired 2 developers from Albania. Let's say it didn't pan out. Would you change your interview process to ban all developers from Albania? Or would

Let's say you hired 2 developers from Albania. Let's say it didn't pan out. Would you change your interview process to ban all developers from Albania? Or would you change your interview process to weed out low-quality candidates? Forget about the legal and moral issues. Which argument makes more sense?