Now that just sounds like the arguments from the other far-right party in America in the Cultural Wars used to distract the people from the actual lack of economic prosperity and quality of life for the many.
"Strict immigration policies" needs not be the "so bad we even betray those we invited in" shit of the far-right: something as simple as having limited numbers per year and preferring the provision of help to the worse off refugees rather than economic migrants is a "strict immigration policy" whilst actually being a pretty Leftwing and Humanitarian posture.
It's reasonable that countries which are wealtier can't just allow anybody out of the other billions of human beings living in places which aren't as wealthy to come over and settle there, simply because several times the local population worth of people with far lower average education who can't even speak the local language coming over will basically destroy the very reason the country is a properous as it is (mainly because those people will be far less productive than the locals but still consume roughly the same amount of resources per-capita).
(This is without even going into the cultural clashes and subsequent rise of the far-right that happen when people from totally different cultures move to a country in large numbers within a short time period)
Once one accepts that no-limits immigration is mathematically and socially destructive, the conversation can then moves into the world of the possible, such as how to make sure it's the most deserving who get invited in, helping those who come integrate (as social clashes with immigrants are almost always just prejudice against the unknown and mismatched cultural expectations), managing the pressures of all those new people on infrastructure and so on: that's things like activelly looking for the worst off people in refugee camps in the worst areas and helping those (including inviting them over), adult education including of the local language to that those coming in can become fully productive citizens of their adopted country, making sure housing markets are properly supplying demand to reduce the pressure of the population growth associated with immigration and so on.
Immigration policy needs not be the anti-other hostility to the point of kicking out the very people who have been invited in (quite extreme when you think that treating one's guests well is an important element of lots of cultures) of the far-right, but it can't be the pie-in-the-sky open door policies of neoliberals cosplaying as lefties with Identity Politics.
Ultimatelly there have to be limits of a "number of people per time unit" kind, the difference between the rightwing take and the leftwing take is the criteria for chosing who gets in if there are more candidates than the limits.
"Good" old Nazi thinking never left the German elites, hence their "unwavering support" for a nation committing Genocide very openly because of the race of its people, hence the highly manipulated Press over there spreading and amplifying race-based views and hence their casual bypassing of legal rights to silence those who would demonstrate against such ultra-racism and the support of Genocide based on it.
They might have changed who the ubermenschen and the untermenshen are but they still keep on classifying people into those two categories by race and treating then very differently, as well as using force to silence dissent against such views and practices.
In light of Russia's aggressiveness, the recent news of Germany militarizing itself sounds like good news, but in light of the increasing regression of Germany back to their old extreme-racist and repressive practices those are very bad news - a Germany which thinks race justifies Genocide and suppresses by force dissent from such way of thinking is bound to sooner or later once again use such military power against those they deem "lesser races"