Credit Card Companies Target The Bankrupt

According to a report from Los Angeles NBC Channel 4, credit card companies are sending credit card offers to those who have filed bankruptcy. This just goes to tshow you that they want to find people who will default. As mentioned in previous posts, they make 75% of their profit from people who default. That is probably why they pull tricks like creep the due dates on accounts so that people who don't pay attention, assume it is due the same time every month and get caught with a late payment. That late payment defaults you on the agreement and your interest rate goes up, you get high late fees, your miles are cancelled, and you lose any premiums you might be getting. This is nothing short of predatory loan sharking. Why is it legal?