AFAIK...you cant play on US realms using EU account..period..cuz i myself wanted to play on EU realms due to my work shift...but was told that it was not possible..

so.. you have to get your own US account to play with us...and if im not mistaken..most of us play/rerolled on the oceania servers...

but if im not mistaken , there are still some malaysian guilds on US realms..
look around..use the search..u r sure to find a few.