Migrants disembark on the Mexican side of the border after crossing the Usumacinta River from Guatemala, in Frontera Corozal, Chiapas state, Mexico, Wednesday, March 24, 2021.
Guatemala issued a similar decree in January to stymie a previous caravan, arguing it represented a public health risk amid the coronavirus pandemic.
During the previous attempt in January, Guatemalan police and soldiers launched tear gas and wielded batons and shields to stop a group of about 2,000 Honduran migrants at a roadblock.
AdSeveral caravans of mainly Honduran migrants have tried to cross Guatemala and Mexico to reach the U.S. border, though none has succeeded since 2019.
U.S. authorities reported more than 100,000 encounters on the southern border in February, the highest since a four-month streak in 2019.