The OECD annual report published Thursday showed shifting migration trends across the globe. Legal immigration flows increased in Portugal, Italy and Spain, while Canada, the US and the UK saw sharp drops. This divergence highlights how different nations manage their borders, impacting local workforces and social systems in many ways.

The OECD's annual report, published Thursday, highlights diverging trends across countries. The significant increase in legal immigration to Portugal, Italy and Spain contrasted with sharp declines in Canada, the US and the UK.

For the second consecutive year, immigration declined among the member ...