Impact of immigration on the economy

Someone makes the claim that immigration must always be good for the economy because the increased supply of labor will result in a higher GDP. Evaluate this statement. In your answer take into account the skill level of potential immigrants as welll as all factors which go into the determination of GDP per capita. Remember that potential immigrants come from many countries and with various skill levels. Do not take a position as to whether immigration should or should not be encouraged; only discuss its potential impact. Look at both overall GDP and GDP per capita