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WASHINGTON (AP) — The Trump administration said Monday that it was extending a ban on green cards issued outside the United States until the end of the year and adding many temporary work visas to the freeze, including those used heavily by technology companies and multinational corporations.

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The ban on new visas applies to H-1B visas, which are widely used by major American and Indian technology company workers and their families, H-2B visas for nonagricultural seasonal workers, J-1 visas for cultural exchanges and L-1 visas for managers and other key employees of multinational corporations.

“This is a bold move by the Trump administration to protect American jobs,” said Mark Krikorian, executive director of the Center for Immigration Studies, which advocates for restrictions.

BSA, a group that represents major software companies, urged the administration to reconsider its changes, particularly to the H-1B program, saying they will hinder economic recovery by making it harder to fill critical positions.

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The administration is proposing a new way of awarding H-1B visas, the official said, awarding them by highest salary instead of by lottery.