France.
England
Brazil
The U.S. would be an obvious candidate.
I don't know the askser
Mexican immigrants came into the country.
If you count all people in the USA of European background, most of the population are immigrants. Only the Native Americans are not fairly recent immigrants - they arrived over 20,000 years ago.
Australia has the most immigrants ion the country of Australia.
In order to develop your own opinion on immigration, you must first educate yourself on the subject. Do some research. Consider things such as:Where are most people immigrating from?What are they trying to get away from?Are you considering immigration in general, or only illegal?What is your country's history of immigration?Where would your country be without legal immigrants?Where would your country be without illegal immigrants?What are the pros of immigration?What are the cons of immigration?How many immigrants are employed?Do employed immigrants take away from jobs of those already in your country, or are they jobs that locals would be unwilling to take?Does immigration have any effect on crime rates?Does immigration lend to the culture of the area, or take away from?Once you have a good collection of statistics from multiple sources, look them over and see how each one makes you feel. This will help you form an educated opinion.
This country only allows immigrants with the green card or a visa
European immigrants come from a variety of countries within Europe. Common sources include Germany, the UK, Italy, France, Spain, Poland, and Romania. These countries often have significant numbers of people seeking opportunities abroad due to economic factors, job prospects, or educational opportunities.
No because immigrants can bring many different beliefs and knowledge that you might not know and these immigrants can teach. Therefore, it is a good thing to allow immigrants into a country.