House Republicans are reportedly hosting an upcoming yearly retreat in Baltimore — a city President Trump called “very dangerous,” “disgusting” and “rodent infested” in a series of tweets attacking it and Rep. Elijah Cummings Elijah Eugene CummingsBlack GOP candidate accuses Behar of wearing black face in heated interview Overnight Health Care: US won't join global coronavirus vaccine initiative | Federal panel lays out initial priorities for COVID-19 vaccine distribution | NIH panel: 'Insufficient data' to show treatment touted by Trump works House Oversight Democrats to subpoena AbbVie in drug pricing probe MORE (D-Md.).

The Washington Post reported Monday that unidentified GOP sources said the House Republican Conference scheduled its September policy retreat, which the president would likely be asked to address, at a downtown Baltimore hotel.

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The Post reports the Baltimore Marriott Waterfront, which is located just outside of Cummings’s district, is sold out during the days of the retreat, Sept. 12 to 14, according to hotel booking sites, while other nearby facilities show availability.

The event is handled in conjunction with the House GOP conference and the nonprofit Congressional Institute.

The Hill has requested comment from a spokesperson for Rep. Liz Cheney Elizabeth (Liz) Lynn CheneyGOP lawmakers distance themselves from Trump comments on transfer of power Graham vows GOP will accept election results after Trump comments Liz Cheney promises peaceful transfer of power: 'Fundamental to the survival of our Republic' MORE (R-Wyo.), the GOP conference chairwoman, and to Congressional Institute President Mark Strand.

A Cheney spokesperson and Strand did not respond to the Post's request for comment.

Trump spent the weekend and Monday morning tweeting attacks on Baltimore and Cummings, the House Oversight and Reform Committee chairman.

His tweets were widely denounced as racist by Democrats, but Trump’s Republican allies defended his comments.

Trump said there was "nothing racist" in his tweets and even claimed Cummings, a 13-term black congressman, was the one who is "racist."

"Mr. President, I go home to my district daily. Each morning, I wake up, and I go and fight for my neighbors," Cummings tweeted in response to Trump's initial Saturday attack. "It is my constitutional duty to conduct oversight of the Executive Branch. But, it is my moral duty to fight for my constituents."