(CNN) During a speech on American energy in Pittsburgh on Wednesday, President Donald Trump ticked through his usual issues before making an unusual remark about his long-promised border wall.

"We're building a wall on the border of New Mexico. And we're building a wall in Colorado," Trump said.

Colorado, located directly north of New Mexico, is not on the US-Mexico border.

Trump went on to say the wall would be "a big one that really works -- you can't get over, you can't get under."

"We're building a wall in Texas," he said. "And we're not building a wall in Kansas, but they get the benefit of the walls that we just mentioned."

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