The Trump administration is making it more difficult for skilled foreigners to work in the United States, challenging visa applications more often than at nearly any point in the Obama era, according to data reviewed by Reuters.

The more intense scrutiny of the applications for H-1B visas comes after President Donald Trump called for changes to the visa program so that it benefits the highest-paid workers, though he has not enacted any reforms to that effect.

Data provided by U.S. Citizenship and Immigration Services shows that between Jan. 1 and Aug. 31, the agency issued 85,000 challenges, or "requests for evidence" (RFEs), to H-1B visa petitions — a 45 percent increase over the same period last year. The total number of H-1B petitions rose by less than 3 percent in the same period.