U.S. Citizenship and Immigration Services said the temporary suspension will allow it to process petitions that have been pending for a long time.
Restrictions have led many H-1B visa holders in the U.S. to move or contemplate moving north to Canada.
The new mission statement no longer says the U.S. is a nation of immigrants.
The proposal is part of Trump’s “Buy American, Hire American” initiative he promised on the campaign trail.
The USCIS was set to launch this year's round of H-1B visa program for skilled foreign workers—and it has not changed significantly despite President Donald Trump's vowed major reforms.