US President Donald Trump’s administration has issued rules to restrict travel to the United States by members of China’s ruling Communist Party and their families, Reuters reported.

The policy reduces the maximum validity length of B1/B2 non-immigrant business and tourist visas for party members and their immediate family members from 10 years to 1 month, the US State Department said in a statement on Thursday.

The measure was aimed at protecting the nation from the party’s “malign influence,” it said, adding the party works to “influence Americans through propaganda, economic coercion, and other nefarious activities.”

It said the party, which has more than 90 million members, also “sends agents to the United States to unabashedly monitor, threaten, and report on Chinese nationals and Chinese-American groups.”

China’s foreign ministry denounced the move.