By Denis G. Rancourt, PhD
I'm going to express this controversial generalization.
The omnipresent propaganda of immigration is just that: propaganda. Immigration is virtually always solely to benefit the host country. It is never an act of charity, except incidentally for its propaganda value. Family reunification included.
Immigration reception by aggressor nations is a mechanism to recruit collaborators in geopolitical campaigns in some cases, economic policy in others, and an aggression by theft of human resources in still others. In addition, immigration loss is generally harmful to the attacked country, and as such can be a weapon of war.
The question should not be how to "help" with immigration, which is a deceptive question, but rather how to stop covert and overt military and economic aggression led by the "free world", and how to actually help populations in the regions where they are devastated by both foreign regime-change designs and brutal globalist-led economic exploitation.
Impulsive Trump/Obama policies , therefore, if applied as actual bans, are harmful to the USA and will not last or even mostly not be implemented. Such is the cruel reality of empire dominance. Trump is a master manipulator of public sentiment but he will soon settle down regarding immigration.
 See the excellent analysis: Seth J. Frantzan, "Obama’s administration made the “Muslim ban” possible and the media won’t tell you", January 28, 2017.