taking my father in laws (us citizen) to Mexico to be buried in his wife’s family cemetery…. Do we need a “visa” for him?

Friday i called so many times to our local Mexico consulate—no answer!

I have a tsa approved plastic urn, cremation certificate and 3 death certificate copies.

The funeral home emailed us suggesting to check the rules for Mexico. But what they sent was as if he was. Mexican citizen that passed here in the US and was being moved back to Mexico to rest.

My mother in law called but she speaks Spanish, i don’t and i was working while she called. She said they said he needs a visa and the funeral home needs to send paperwork but that doesn’t seem correct from what I’ve googled? What type of visa is it? I wish i was on the call to ask more questions, hence why i was trying to call but couldn’t get someone to answer.

I spoke to the airline and they said 3 copies of the death certificate and cremation , we also have his passport and going to bring his birth certificate etc but never heard of a visa? I just feel like the lady thinks he’s a Mexican citizen

Does anybody have any experience with this?

We thought we were in the clear with everything but i don’t want customs to stop up when we arrive at the airport and not let us take him.