I have great admiration for strength; whether it’s for a farmer in México who perseveres in tending to crops for long hours in the sun, a construction worker in India carrying load after load of debris by hand (and head), or a body-builder striving to reach his or her potential with only limited access to calories and nutrition in Cuba.  The commitment and output I have observed in materially limited societies (usually with only bare bones equipment and no medical safety-net) is stunning.  It’s no wonder to me that immigrants play a vital role in the United States.