The 10 Year Law is a defense against deportation. If you’re in a process of deportation and have been in the US for more than 10 years, together with other requirements such as having children born here or a significant other that is a legal resident or US citizen you could qualify for this benefit. It’s a humanitarian visa and you will need to prove that your family will be facing extreme difficulty if you’re deported. Thus, the 10 Year Law does exist, but it’s only a defense against deportation.