Elvis Presley was immensely popular around the world. Surely he could have drawn huge audiences and made a ton of money if he toured overseas. But he never performed anywhere overseas. What was the reason for that?
Elvis' manager, Colonel Tom Parker (whose real name was Andreas Cornelis van Kuijk) was an illegal alien. Sending Elvis overseas, where Parker would have needed a passport to travel, would have jeopardized his being "found out". And Parker wasn't about to send Elvis over there by himself, where someone else might have exerted control over him and convinced Elvis to dump Parker.
It is reported that a promoter in Saudi Arabia offered $10M US to tour there, which Parker turned down.
Throughout his entire career, Presley performed in only three venues outside the United States—all of them in Canada, during brief tours there in 1957. Rumors that he would play overseas for the first time were fueled in 1974 by a million-dollar bid for an Australian tour. Parker was uncharacteristically reluctant, prompting those close to Presley to speculate about the manager's past and the reasons for his apparent unwillingness to apply for a passport. Parker ultimately squelched any notions Presley had of working abroad, claiming that foreign security was poor and the venues unsuitable for a star of his magnitude. - Stanley, David; Coffey, Frank. The Elvis Encyclopedia. Virgin Books; 1998. ISBN 0-7535-0293-3.