This bug was on my cleome plant in Atlanta Georgia
Specifically, it appears quite similar to a later juvenile stage (~4th instar) of Chinavia hilaris, the Green Stink Bug.
4th instar; Source: Oregon Dept of Agriculture
4th instar; Source: UF IFAS; Credit: Herb Pilcher, USDA-ARS, Bugwood.org.
From UF IFAS:
Distribution The green stink bug occurs in most of eastern North America, from Quebec and New England west through southern Canada and the northern U.S. to the Pacific Coast, and southwest from Florida though California. This is the most commonly encountered stink bug species in North America.