Iowa Republican Congressmember Steve King is coming under fire after the conservative media outlet The Weekly Standard released audio of him referring to immigrants as “dirt.” King was speaking at a campaign stop one day before the midterm elections.

Rep. Steve King: “So, I guess I’m going to have to go get some dirt from Mexico to grow the next batch.”

Unidentified: “Trust me, it’s on its way.”

Rep. Steve King: “Well, yeah, there’s plenty of dirt. It’s coming from the West Coast, too, that and a lot of other places besides. This is the most dirt we’ve ever seen.”

After The Weekly Standard reported King’s comments in print last week, King’s campaign insisted the remarks were fabricated, challenging The Weekly Standard to release the audiotape. Steve King narrowly beat Democratic challenger J.D. Scholten last week to retain his congressional seat despite his frequent racist remarks, his ties to white nationalists and his support for far-right candidates overseas.