Again, if Oswald was working for the FBI or CIA as you have suggested, who would he be hiding from in the US by using an alias? Simply repeating over and over again that secret agents use false identities is not an answer. Lots of criminals use false names as well. You don't need an alias if you are working for the very people who are doing the looking. They would know Oswald's whereabouts if he was working for them. An alias would be pointless. Oswald used an alias not because he was working for the FBI but because he knew the FBI was keeping tabs on him and he wanted to make it as difficult as possible to track him.
Again, if Oswald was working for the FBI or CIA as you have suggested, who would he be hiding from in the US by using an alias?Who knows? Law enforcement officers go undercover all the time, don't they?
Simply repeating over and over again that secret agents use false identities is not an answer. Yes it is. It's just an answer you don't like.
You don't need an alias if you are working for the very people who are doing the looking. What makes you think that the CIA and/or FBI were looking for Oswald?
They would know Oswald's whereabouts if he was working for them. Really? What makes you say that?
Oswald used an alias not because he was working for the FBI but because he knew the FBI was keeping tabs on him The FBI was keeping tabs on him? Really?
and he wanted to make it as difficult as possible to track him. By taking jobs under his own name, having his wife and kids stay at a known address, requesting a visit of an FBI officer after he was arrested in New Orleans and going to see Hosty?