The Colorado Republican wrote on Twitter that the two German Shepherds owned by the US president were ‘deported’, while “illegal immigrants” were not.
It followed news that the two dogs were sent back to Mr Biden’s home state of Delaware after a “biting” incident at the White House last week.
Ms Boebert remarked that “Biden can deport his dogs for violent acts, but not illegal immigrants.”
“I guess the White House isn't a sanctuary city,” she added.
The Republican was widely criticised for the comments, with Colorado state senator Kerry Donovan, a Democrat, urging her Twitter followers to “Retweet if you're ready to unseat Lauren Boebert.”
Another Twitter user wrote: “Is it just me, or should Lauren Boebert already be removed from Twitter?”
The White House had been withholding funds from so-called “sanctuary cities” who refused to cooperate with Mr Trump’s tough stance on immigration policies, prior to Mr Biden’s revocation of the order.
Mr Trump claimed in his address to CPAC in February that his successor “revoked an executive order cracking down on sanctuary cities [that] has effectively ordered a shutdown of ICE, halting virtually all deportations."
The comments were shared by Ms Boebert, an ally of the former president, that evening — despite Mr Biden not halting all deportations, as claimed by Mr Trump.
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