Democrats reacted with boos and hisses to a statement by President Trump Donald John TrumpBiden leads Trump by 36 points nationally among Latinos: poll Trump dismisses climate change role in fires, says Newsom needs to manage forest better Jimmy Kimmel hits Trump for rallies while hosting Emmy Awards MORE on "chain migration" at his State of the Union address.

Presenting his immigration plan, Trump asked for a reform of the family reunification visa program, which he and some Republicans call chain migration.

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"Under the current broken system, a single immigrant can bring in virtually unlimited numbers of distant relatives," said Trump, prompting the audible Democratic reaction that could be heard loud and clear on television.

Trump did not appear to react to the boos and hisses.

Democrats had mostly remained quiet for the first hour of the speech, limiting their reactions to sporadic applause.

Family reunification visas do not allow immigrants or U.S. citizens to bring in distant relatives, only to sponsor parents, unmarried children and siblings. In certain cases, sibling sponsorships can take decades to go from application to migration.

Democrats took to Twitter to criticize the remarks.