But it is, because "we're" letting in populations of people. That is millions or hundreds of thousands of people a year. If the admittance is from countries with cultures immisicible with western values or our form of governance structured for an appreciation of individualism, then, yes, you are necessarily going to create a problem.
Look, I get that you're r-selected, and that's why I'm hitting a brick wall getting through to you, but you're living in a fantasy if you imagine all people from every kind of culture can live under the same set of laws.