If people who come to the US when they are minors can earn residency through good moral character, then I think that could be good for our economy in more than a few ways. Considering that the person would have to meet certain standards to be eligible means that it might be effective.
The dream act lets young immigrants of good character stay in America if they educate themselves or help defend our country. An educated workforce is essential to a modern economy. Education is the critical difference between countries like Singapore and so many less developed nations. This law serves young people by encouraging them to better themselves, and it serves our country at the same time. When the Dream Act promotes education it promotes a better future for America.