I left Mexico mid March and have been watching the border crossing we always use via webcam ever since.
https://www.cityoflaredo.com/bridgesys/Cameras/bridge4cam.htmlTraffic on Bridge #2 northbound dropped substantially but has been returning to pre-Covid19 levels lately. Texas reopening was the time traffic rebounded. The webcam view is a little misleading because northbound traffic goes through a very slow and tight bottleneck with customs while southbound traffic has much less restrictions due to an easier entry.
However another webcam site of locations in Mexico tell a different story.
http://webcamsdemexico.com/streamsAll the webcams in Mexico reveal virtually deserted streets and beaches. City squares once teeming with people now reveal just a few people.
Bottom line is yes, one can probably cross the border into Mexico - but given the present conditions what would one do once there? Hotels and restaurants are probably very limited. There have been stories of townspeople and officials trying to limit entry out of fear of travelers bringing in the virus - these stories have dropped off lately.
These are just my observations - I might be all wet, but the webcams reveal the conditions.
