there are thousands of examples of Mexicans, Mexican businesses, Mexican media sources, Mexican celebrities and journalists with access to American citizens campaigning for Hillary.
are you saying no Mexican gave money to Hillary and no Mexican openly communicated their support for Hillary in the real or virtual presence of American voters?
what do you mean by official? someone who receives a pay check directly from the government? Someone who works in an industry regulated by the government?
It’s no longer clear to me. For example libs - in their zeal to stamp out faith - claim that a high school football coach is an extension of Congress. Would an Mexican public school soccer coach qualify as a Mexican “official”? What about a Mexican radio broadcast station manager who operates under a Mexican government license and whose broadcasts can be heard in the US? A Mexican journalist paid by a Mexican news company who receives Mexican government benefits?