What is the Invasion Clause? Texas Guv Greg Abbott invokes constitutional clause amid immigration crisis

AUSTIN, TEXAS: Greg Abbott has invoked the invasion clauses of the US and Texas constitutions to protect the state against illegal migrants coming across the southern border. He wrote on Twitter, “I invoked the Invasion Clauses of the US & Texas Constitutions to fully authorize Texas to take unprecedented measures to defend our state against an invasion. I'm using that constitutional authority, & other authorization & Executive Orders to keep our state & country safe.” 

In a letter sent to President Joe Biden on Wednesday, November 16, 2022, Abbott accused the administration of ignoring the ongoing mass influx of illegal immigrants into the country's southern states. He wrote, "Your inaction has led to catastrophic consequences. Under your watch, America is suffering the highest volume of illegal immigration in the history of our country. This past year, more than 2 million immigrants tried to enter the country illegally, coming from more than 100 countries across the globe. Worse yet, your failed border policies recently prompted a United Nations agency to declare that the border between the United States and Mexico is the deadliest land crossing in the world."