This is a warning issued by US President Donald Trump on Twitter yesterday. The US President said a large group of migrants from Mexico are "stone cold criminals" and that US will have to close the border permanently if needed.
In addition, in his tweet, he also asked the US Congress to allocate fund to build a wall at the border with Mexico. The threat came after US border agents fired tear gas at migrants seeking to break US border. The gate between San Diego and Tijuana was temporarily closed after the incident, but was reopened on Monday.
