Hugging is not a natural thing for dogs. You aren't going to prove you are the King to them by forcing it. It's not a dominance issue. If you have a dog that likes to be hugged, great. If not, leave them be and allow them their personal space. (Read The Other End of the Leash)
And just an FYI...the guy that came up with the whole dominance theory? He now says it's based on flawed science and is crap.