Donald Trump warns of migrant 'invasion' in US after 60,000 migrants storm Spanish border: 'Catastrophe!'

US President Donald Trump has warned of a similar "invasion" of illegal migrants to the US after witnessing the "catastrophe" in Spain.

Reacting to the surge of 60,000 people across the Spanish border, Mr Trump said: "I saw Spain yesterday, and I watched the catastrophe that took place. It looks like an invasion of a country by hundreds of thousands of people, and that same thing is going to happen to us if the Republicans don't get elected, except worse. Much bigger.

"Despite the fact that we have built thousands of miles of wall, which I said we were going to do, but if we didn't have that, forget it. We have the safest border in the world, but if we're not in office, our country will be invaded at levels that made Spain look small.

"And when I watched it, I said that's going to be a talking point for the mid terms, because when you look at what happened to Spain, they don't know what to do, and it's happening again today, they're coming in by the tens of thousands.

"You're just invading the country okay, and what that is is weak law, bad management, but very liberal law. They passed a couple of laws and people are smart, they read from other countries and they swam that three mile sweat wall, however they got in. But nobody's seen anything like it."

WATCH ABOVE.