Former 2024 Republican presidential candidate Vivek Ramaswamy reiterated the importance of securing the southern border on Wednesday, warning that the terrorist attack Israel endured last year could happen in the United States.

Ramaswamy, who suspended his presidential campaign last month and endorsed former President Donald Trump, described the “invasion” occurring along the U.S. border as the biggest threat the country faces. The former presidential candidate’s warning comes after the Border Patrol caught more than 172 known or suspected terrorists illegally entering the U.S. over 12 months ending in October, the same month Israel was attacked by the Hamas terrorist group.