You are quite right. People don't care if uneducated or undereducated immigrants come in to the country --except for a few "nationalists". But over all people don't care or actively support immigration, which is a good thing -bettering people's prospects in life.

However, it is quite evident that professionals are _against_ immigration of other professionals because that directly threatens their professional stability.

So, we know immigration, on the whole is good. We know that immigration from poor countries allows those people to better their lives -at the expense of undereducated (blue collar) locals. But professionals don't quite care, actually, we prefer this since it makes products and services cheaper for us. But once the immigration threatens our lifestyles, then on, no, immigration is bad it drives down wages, it threatens quality of work, it allows exploitation and so on. When push comes to shove, we're all protectionists of varying degrees.