'Most' but not by much margin. Which means, if you are looking to curb immigration, that there are two parallel but independent issues to resolve. The UK has in

'Most' but not by much margin. Which means, if you are looking to curb immigration, that there are two parallel but independent issues to resolve. The UK has in recent years tightened restrictions on many visas for non-EU nationals including those for foreign spouses (minimum income rules, capacity to speak english), post-study work and shortage occupation work (many occupations taken off the list as they were being filled by EU nationals).