Imagine that you are playing a game with some friends and someone breaks one of the rules. The person who broke the rule might get kicked out of the game and not be allowed to play anymore. This is kind of like what happens when someone is deported from the United States.
Deportation means that someone who is not originally from the United States is being sent back to their home country because they broke the rules. However, sometimes people who are actually from the United States can also be deported. This happens when they have done something very bad, like committing a crime or not following the rules for being in the United States.
Being deported can be really scary for the person who is being sent away. It means they have to leave their friends and family in the United States and go back to a place where they might not know anyone or even speak the language very well.
So it's really important for everyone to follow the rules and be a good citizen, so they don't have to worry about being deported from the United States.