Is it safe to allow someone visit from monterey Mexico Canada?

There are no cities named Monterey in Mexico or Canada. However, there are cities named Monterrey in Mexico and Monterey in California, USA. If someone is visiting the latter, as of 2023 there are no travel advisories or restrictions, but it is always best to check with the most recent information available from official sources such as the U.S. Department of State's travel advisories or the Centers for Disease Control and Prevention's (CDC) travel health notices.