President Obama’s Department of Homeland Security deported about 2,500 people who overstayed their visas in 2015, the lowest of any year of his administration, according to a Republican lawmaker who raised the issue with DHS on Tuesday.

DHS deported 12,500 people for overstaying their visas in 2009, according to Texas Rep. Lamar Smith, but that had number dropped by 10,000 by 2015. Smith estimated that 2,500 deportees represents one twentieth of the people who have overstayed their visas.