1. The busing of the somewhat illegal immigrants is a (very successful publicity stunt).
2. One should note that many people on the “blue” side are not supportive of increased immigration, and many on the red side are. The complication is that the “illegals” tend to be hard working and upwardly mobile (meaning they may take away jobs from less industrious American workers), and that they tend to be economic conservatives (most are from socialist-leaning governments, which is why they tend to be pro-capitalism) and social conservatives (anti-abortion, anti-gay and pro-religion).
3. If the government were run by rational people, and given that the US has a serious labor shortage, the federal government would place them in jobs which are otherwise going unfilled, with the federal government bearing the costs (rather than state and local government located by the border). However rationality seems to have gone out of style (it was so 20th century).