Energy efficiency event hosted by Ingersoll Rand, The Hill and The Echo Foundation

Panelists are assembled at an energy efficiency event hosted by Ingersoll Rand, The Hill and The Echo Foundation on Tuesday, Sept. 4.

Retired Gen. Wesley Clark speaks at an energy efficiency event hosted by Ingersoll Rand, The Hill and The Echo Foundation.

Sen. Amy KlobucharAmy KlobucharSanders, not Trump, is the real working-class hero A guide to the committees: Senate Drug importation from other countries will save dollars and lives MORE (D-Minn.) speaks at an energy efficiency event hosted by Ingersoll Rand, The Hill and The Echo Foundation.

Mike Lambach speaks at an energy efficiency event hosted by Ingersoll Rand, The Hill and The Echo Foundation.

Retired Gen. Wesley Clark speaks with Amy Caulkins at an energy efficiency event hosted by Ingersoll Rand, The Hill and The Echo Foundation.

Mike Lambach greets Sen. Amy Klobuchar (D-Minn.) at an energy efficiency event hosted by Ingersoll Rand, The Hill and The Echo Foundation.