In.

https://www.treasury.gov/press-center/press-releases/Pages/sm0144.aspx

I'm more worried about Julion Alvarez probably not being able to tour in the US.

Who?

From a US perspective short term this is bad news. We need Mexico to beat the teams left in the hex schedule to help us out, this makes that harder.
But there is something funny and sad about a Mexican national team member who can't enter the US given how many games they play here, which will likely be the case. Assets will be frozen too and then who knows what.
And given the view of the US in Mexico right now, will the Mexicans even do anything about it?

From El Tri, It's just Marquez, correct?

not sure that will really affect them very much. He's 38, and one player.