A look at President Donald Trump's statement on border security Tuesday night and how it compares with the facts:

TRUMP: "For decades, open borders have allowed drugs and gangs to pour into our most vulnerable communities."

THE FACTS: "Open borders" is an exaggeration. Border arrests, a useful if imperfect gauge of illegal crossings, have dropped sharply over the last decade.

The government under Presidents George W. Bush and Barack Obama roughly doubled the ranks of the Border Patrol, and Bush extended fencing to cover nearly one-third of the border during his final years in office. The Obama administration deported more than 2 million immigrants during the eight years he was in office, more than in previous administrations.

Studies over several years have found immigrants are less likely to commit crimes than people born in the United States.

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