The movement of people across borders has halted in much of the world as countries close their borders in response to the coronavirus outbreak.
As a standoff escalates at the Greece-Turkey border, here's how people in Greece see migrants, as well as how many migrants live in Greece.
The number of unauthorized immigrants living in Europe increased between 2014 and 2016, then leveled off to an estimated 3.9 million to 4.8 million in 2017, according to new estimates from Pew Research Center.
The size of Europe’s unauthorized immigrant population in 2017 was less than half the number in the United States.
Most live in Germany, the UK, Italy and France, and about half had arrived in Europe in recent years. Overall, these migrants account for less than 1% of Europe’s total population.
Canada resettled 28,000 refugees in 2018, similar to its 2017 total. Meanwhile, the U.S. resettled 23,000, down from the previous year.
Money sent by immigrants to their home countries in sub-Saharan Africa reached a record $41 billion in 2017.
Many Nigerians, Tunisians and Kenyans say they plan to leave their countries in the next five years. Some who plan to migrate say they have taken steps to do so, such as gathering information about a destination country and saving money.
Majorities in top migrant destination countries say immigrants strengthen their countries. Yet publics are divided on immigrants' willingness to adopt their host country's customs.
Nearly 14% of the U.S. population is foreign-born. That's the highest share of foreign-born people in the country since 1910, but it's far from the highest in the world.