Yes, the SAVE Act of 2007 is a good piece of legislation, because it is a method of making sure that only legal immigrants enter the country. There are a great deal of illegal immigrants. There are so many, that it is an entire subset of society. The legislature had to try something in order to reduce incentives for people to come to this country illegally.
The SAVE act is a piece of legistlation to let workers and government officials know if a potential employee is employable in the country. This benefits employers who do not want to hire illegal help. It also helps immigration officials track illegal help in the country. It is not a perfect bill, but it is helpful.