[dragonwriter]

You are asserting the existence of strain and that it is due to immigration, so the burden is rightly on you to explain the appropriate metric, provide evidence of that the level at which you have defined "strain" on that metric is met, and provide evidence that immigration is the cause of that.

[hoopd]

First, I think your intention is to silence me as opposed to engaging in discussion.

Second, my main assertion is the existence of a point where immigration is problematic. Example: colonialism.

Third, as to the side conversation of whether or not America is experiencing a problematic level of immigration I've already submitted the fact that 10% of students in US public schools are ESL learners. We can add to it that 16% of California's prisoners were not born on U.S. soil and they're so overcrowded the Supreme Court ordered them to do something about it. I'm calling these things "strain". I hope we can agree that immigration plays a role in both examples.