No worries! This is a common native species in Arizona (genus Algarobius), it has actually been introduced to a couple places (such as UAE and Oman in the middle east) on purpose to control invasive populations of mesquite. There is no way it will survive in Rhode Island so no risk at all for becoming an invasive there because 1: No mesquite and it eats nothing else, and 2: Far too cold.
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