Original sentence: , between member states) are abolished, and instead checks are restricted to the external Schengen borders and countries with external borders are obligated to enforce border control regulations.Between 2010 and 2013, around 1.4 million non-EU nationals, excluding asylum seekers and refugees, immigrated into the EU each year using regular means, with a slight decrease since 2010.By comparison, the foreign-born population is 13% of the total population in the United States, 20% in Canada and 27% in Australia.Prior to 2014, the number of irregular border crossings detected by Frontex at the external borders of the EU peaked in 2011, with 141,051 sea and land irregular arrivals.The foreign-born population residing in the EU in 2014 amounts to 33 million people, or 7% of the total EU population (which amounts to more than 500 million people)
Edited sentence: Although the foreign-born population is 13% of the total population in the United States, 20% in Canada and 27% in Australia, these are single countries, with a culturally, linguistically and ethnically lot more homogenous population, compared to the 28 countries of the EU.Between 2010 and 2013, around 1.4 million non-EU nationals, excluding asylum seekers, immigrated into the EU each year using regular means, with a slight decrease since 2010.Prior to 2014, the number of illegal border crossings detected by Frontex at the external borders of the EU peaked in 2011, with 141,051 sea and land irregular arrivals.The foreign-born population residing in the EU in 2014 amounts to 33 million people, the 7% of the total EU population (which amounts to more than 500 million people).between member states) are abolished, and instead checks are restricted to the external Schengen borders and countries with external borders are obligated to enforce border control regulations