Democratic Rep. Joaquin Castro Joaquin CastroHispanic Caucus members embark on 'virtual bus tour' with Biden campaign Hispanic caucus report takes stock of accomplishments with eye toward 2021 Democratic lawmakers call for an investigation into allegations of medical neglect at Georgia ICE facility MORE (Texas) said Wednesday that he has heard evidence that Trump administration members committed crimes during the 2016 presidential election.

Castro, a member of the House Intelligence Committee, responded to a question from MSNBC's Joy Reid on whether he believed the information he had seen so far in the committee's investigation of Russia's election interference was evidence of a crime. She specifically referenced hearings the committee had with Fusion GPS, the company behind a salacious dossier with unproven information on President Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE.

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"Do you believe that you heard evidence of crimes committed by members of this administration?" Reid asked.

"Yes," Castro responded.

He added that he believed Republicans were not giving the House and Senate investigations enough resources to properly track down leads and make recommendations to avoid future election interference by Moscow.

"A big concern that I have is that there's not enough resources, or energy or time that's been committed to tracking down the leads that have been given to us," Castro said.

Fusion GPS, a Washington research firm, was hired first by Republicans during the 2016 GOP primary and later by lawyers representing Hillary Clinton Hillary Diane Rodham ClintonHillicon Valley: FBI chief says Russia is trying to interfere in election to undermine Biden | Treasury Dept. sanctions Iranian government-backed hackers The Hill's Campaign Report: Arizona shifts towards Biden | Biden prepares for drive-in town hall | New Biden ad targets Latino voters FBI chief says Russia is trying to interfere in election to undermine Biden MORE's campaign and the Democratic National Committee to research Trump's alleged ties to Russia.

In November, Fusion GPS's founder, Glenn Simpson, testified before the House Intelligence Committee for seven hours over the creation of the dossier.

Claims made in the unverified dossier, as well as funding for the research, have come into question in recent months as Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE's special counsel investigation into possible collusion between the Trump campaign and Russia evolves.

Fusion GPS's founders have rejected any suggestions that their research spurred the beginning of the Trump-Russia investigation, originally begun by the Justice Department under President Obama.