Media cross-ownership in the United States is when a person or a company has many different kinds of media outlets (like TV stations, newspapers, and radio stations) in the same area. This can mean that one person or company controls a lot of what people hear or read in that area. It's like if you had a lot of toys, and you decided which toy your friends could play with.
The government has rules about how much media one person or company can own in one area, to make sure that people have a lot of different sources of information. This is because they don't want just one person or company to have too much power over what people hear or read. It's like if there were only one kind of candy in the store, and everyone had to choose that one kind.
Sometimes, people think that media companies and rich people try to get around these rules by creating different companies that they own but that are technically separate. This is called "sham ownership," and it's not allowed. It's like if you tried to hide your toys in your friend's house, so you could have even more toys without your parents knowing.
So, media cross-ownership is just when one person or company has lots of different kinds of media outlets in one area. This is sometimes okay, but sometimes it's not allowed if it gives them too much power over information.