On that wikipedia page you linked, the 7000 (or 10000 since 1994) deaths are from all combined sources. The vast majority of those seem to be from exposure to the elements (for instance hypothermia is one of the most common causes of death) or accidents. If you read the part of that page that talks about Border Agents' use of force, around 17 deaths are listed, with an additional 10 left disabled. Your use of that source is a misunderstanding at best or dishonest at worst.