The German government’s plan to expand border controls is not likely to result in a noticeable decrease in the number of asylum seekers, a migration researcher said on Saturday. “Anyone who expects that border controls will lead to a decrease in irregular migration is raising an expectation that is unattainable,” researcher Gerald Knaus said in an interview with the Deutschlandfunk radio station. Germany is a member of the Schengen area, which allows some 420 million people in 29 European countries to travel freely without facing border controls. But checks are already in place at some of Germ…