People line the walls of the House Chamber as they listen to President Barack Obama's State of the Union address at the U.S.… https://www.rawpixel.com/image/4050602/photo-image-face-art-patternFree Image from public domain licenseAilanthus Webworm Moth on butterfly milkweed flower. Free public domain CC0 photo. https://www.rawpixel.com/image/6202133/photo-image-flower-public-domain-natureFree Image from public domain licenseOrange mallow - showy desert flowers, 05/1972. Photographer: Norton, Boyd. Original public domain image from Flickr https://www.rawpixel.com/image/8802983/photo-image-flower-plant-artFree Image from public domain licenseA black swallowtail butterfly enjoys a snack from a blooming lantana plant at Merritt Island National Wildlife Refuge in… https://www.rawpixel.com/image/440397/free-photo-image-butterfly-flower-black-swallowtailFree Image from public domain licenseLady. Photographer: Brady, Mathew, 1823 (ca.) - 1896. Original public domain image from Flickr https://www.rawpixel.com/image/8803105/photo-image-plant-art-personFree Image from public domain license