The Hague Convention has not solved all of the problems in transnational service of process. Much of the difficulty has centered on the US preference for service by mail, a method of minimal expense.
Joseph F. Weis Jr.,
Service by Mail—Is the Stamp of Approval From the Hague Convention Always Enough?,
57 Law and Contemporary Problems
Available at: https://scholarship.law.duke.edu/lcp/vol57/iss3/11