There is a large gender divide on peoples views on migration.
To remedy this I propose that we ban migration from men. That is to say have a women only immigration policy.
Now there are many benefits to this and many areas where this could help.
Workforce - many of the sectors where we are struggling with populating are women heavy industries, from carers to primary school teachers.
Integration - with a one gender immigration policy, if someone move to the country and wants to find a partner, they are forced to pick a local, this means that they will be integrated into the country through marriage.
Reevaluation of migration - many women have a tendency to care and protecting of peoples, this has led to many of the pro-mass migration advocates being women. If there were many women coming into the country, many possibly from more traditional cultures that they are now in direct conflict for partners, I believe you will see many ex-pro migration women manning the cannons to stop new migration.
Population crisis - there is a dearth of babies in the country, more women mean more babies, mean more successful country.
Female evaluation of priorities - with more competition it is possible that the thought viruses that have contaminated many western women will lift (see the 2024 voting for young women in the UK if you dont believe me).
To wrap this up I must admit that this is somewhat tongue in cheek, but I do believe that if migration was not majority male there would be far less friction and it could actually be beneficial. Actually pushing for this policy would tactically be an improvement.