President Trump on Thursday oddly compared the demilitarized zone separating enemies North and South Korea with the United States’ border with Mexico.

“We spend billions of dollars in other countries maintaining their borders and we can’t maintain our borders in our own country – is there something a little bit wrong with that?,” he said during a speech in Ohio touting his infrastructure agenda.

While the border with Mexico separates two allies and trading partners, the DMZ is a buffer zone that cuts the Korean peninsula in half – similar to the Cold War’s Berlin Wall that separated East and West Germany.

The border, often called “the Scariest Place on Earth,” was created in the armistice – or cease-fire – that ended the Korean War in 1953.

Both sides are heavily fortified with troops and military equipment.

Trump touted the wall he wants to build at the Mexican border during his 2016 presidential campaign and pledged that Mexico would pay for it.

A spending bill passed by Congress last week allocated $1.6 billion for border security, even though Trump has sought $25 billion.

Since then, Trump has floated the idea of the military using some of its budget to build the wall.