Thank you for the welcome.
Here is the article in question.
https://kikimosleyimmigrationlaw.wo...ant-visa-revocation-and-removal-from-the-u-s/
There is what I feel is relevant discussion about halfway down. The article is about Justin Bieber but it provides statutes where Bieber could lose his work visa.
Like Richards, Bieber is a Canadian citizen on a work visa. The relevant passage is:
"When a nonimmigrant visa applicant seeks a visa to come to the U.S. to work, they apply through a U.S. embassy consular office and that visa can be revoked if the visa holder becomes ineligible to maintain the nonimmigrant visa, which can occur for a variety of reasons. There are criminal and related grounds for visa ineligibility, among other additional reasons a visa can be revoked. An excerpt from the statute containing grounds for visa revocation identifies criminal and related issues and states, “…any alien convicted of, or who admits having committed, or who admits committing acts which constitute the essential elements of (I) a crime involving moral turpitude (other than a purely political offense) or an attempt or conspiracy to commit such a crime, or (II) a violation of (or a conspiracy or attempt to violate) any law or regulation of a State, the United States, or a foreign country relating to a controlled substance"
additional link:
http://www.uscis.gov/iframe/ilink/docView/SLB/HTML/SLB/0-0-0-1/0-0-0-29/0-0-0-2006.html#0-0-0-1201
The example tossed out about Lamarr Hoyt doesn't consider this issue. In addition to all the things stated by other posters, Hoyt was a US citizen. This issue simply did not apply. He wouldn't need a work visa. MLB didn't play games in Mexico at the time either.