Onsider immigration into the US and remittances sent home

Who should the US try to attract and why? What recent immigrants are vital to our economy? Do we need more low-end workers? Do we need more high-end professionals? What about the people that are already here illegally a what should the US government do? Remittances are funds sent abroad, usually to family. See Remittance. Why are remittances sometimes more effective than foreign aid? How can minimum wage workers afford to send money home?