Larry Kudlow, the former economics adviser to President Ronald Reagan, said President Donald Trump is “on the right track” with an executive order to review how foreign workers are permitted to reside temporarily in the U.S.

The president on Tuesday ordered the review of the H-1B visa system, which critics say gets abused when companies to replace U.S. workers with lower-paid foreigners. Trump is targeting information-technology outsourcing companies that use the visas to hire low-paid, less-skilled workers.

“The question is: Are the Silicon Valley firms playing by the rules, or they are trying to undercut the specialized, American techie work force?” Kudlow said on cable channel CNBC. If there are abuses, then the system should be changed, Kudlow said.

Trump pledged during his campaign to use presidential authority to urge companies to “Buy American” products and “Hire American” workers. Kudlow was an economics adviser to the Trump campaign who helped