The phrase "illegal immigrants" refers to people who enter or stay in a country without proper permission or legal documentation according to the laws of that country. Full definition
As of 2012, it's estimated that the number of illegal immigrants in the country has actually declined by over 1 million people to a total of 11 million. (businessinsider.com)
At town hall meetings, lawmakers will face activists calling for a pathway to citizenship for illegal immigrants. (epolitics.com)
The report reveals that officials stopped taking the fingerprints and photographs of caught illegal immigrants in 2010, because of a lack of cells. (politics.co.uk)