The Department of Homeland Security (DHS) has decided to continue limiting travel from Mexico into the United States at land ports of entry, allowing only "essential travel." This decision is in response to the risks posed by COVID-19 and is intended to prevent further virus transmission. Essential travel includes U.S. citizens and residents returning home, medical travel, work-related travel, and more, while tourism and recreation are not considered essential. These restrictions are in effect from February 22, 2021, through March 21, 2021, and do not apply to air, freight rail, or sea travel.
Simple Explanation
The government is telling people that they can't travel from Mexico to the United States by car or foot unless it's for important reasons, like work or going to the doctor, because they want to help stop the spread of a virus. This rule is like a big STOP sign at the border only for people on the ground, not for those flying or on big ships.