What does a federal ban on price gouging look like?

The Harris-Walz campaign has said they want to create a federal ban on corporate price gouging (usually mentioned when folks talk about price hikes in grocery stores). I see economists complaining about variations of this policy being bad, e.g. leading to food desserts. But as far as I can tell there hasn't been anything specific proposed. Could someone explain our best guess at what they are proposing, and if it's been serious analyzed/tested elsewhere?

They cite existing legislation in the states; maybe explaining what that legislation does/how it works would be helpful?