Sen. Ron Johnson believes President Trump’s border wall proposal is a metaphor for securing the border, and not a proposal for building a massive barrier between the U.S. and Mexico.

Johnson, R-Wis., said on CNN Thursday that he liked Secretary of Homeland Security John Kelly’s proposal to have the “wall” be a combination of fencing, concrete barriers, drones and other methods to secure the border. While Trump has promised a massive, physical wall, Johnson said he never really took it that way.