Explanation
In the United States, there is no cultural rule against eating with your left hand; both hands are considered equally acceptable for dining, and handedness is not tied to hygiene or politeness. Most Americans are right-handed but use utensils with either hand, and the left hand is not associated with any negative connotations in dining contexts.
Local Tip
Feel free to use whichever hand feels most comfortable, as long as you use utensils appropriately for the dish.
How it compares elsewhere
Eating with the left hand is considered unclean, as it is traditionally used for bathroom hygiene.
The left hand is reserved for personal hygiene; always eat and pass food with the right hand.
While not strictly rude, using the left hand to pass food or handle communal dishes may be seen as awkward; use your right hand for such actions.