Rep. Alexandria Ocasio-CortezAlexandria Ocasio-CortezHillicon Valley: Hacker group targeted electric grid | House Democrats press CBP over facial recognition program | Senators offer bill to protect health data | Groups file FCC complaint over carriers' use of location data Hillicon Valley: Hacker group targeted electric grid | House Democrats press CBP over facial recognition program | Senators offer bill to protect health data | Groups file FCC complaint over carriers' use of location data Ocasio-Cortez shares verse by the 'Congressional Destiny's Child' in promotion of new birth control legislation MORE (D-N.Y.) is amplifying her calls for the House begin impeachment proceedings against President TrumpDonald John TrumpDC board rejects Trump Hotel effort to dismiss complaint seeking removal of liquor license on basis of Trump's 'character' DC board rejects Trump Hotel effort to dismiss complaint seeking removal of liquor license on basis of Trump's 'character' Mexico's immigration chief resigns amid US pressure over migrants MORE.

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While Speaker Nancy PelosiNancy PelosiPelosi hits Trump on health care: His 'cruel hypocrisy knows no bounds' Pelosi hits Trump on health care: His 'cruel hypocrisy knows no bounds' On The Money: DOJ offers legal opinion backing refusal to release Trump tax returns | Centrist Democrats raise concerns over minimum wage | Trump bashes Powell ahead of crucial Fed meeting | Design leaks for Harriet Tubman bill MORE (D-Calif.) and other congressional leaders have tried to tamp down impeachment talk, Ocasio-Cortez and other voices on the left have been growing impatient as the White House increasingly rejects congressional oversight efforts.

“We have to move forward,” Ocasio-Cortez told CNN on Tuesday. “I trust the Speaker's taking a measured approach to ensure that we’re moving everyone forward." 

“Being a Speaker is hard, and holding this party together is a difficult task,” she added, “but I think we have to move forward.”

The House is currently conducting multiple investigations into Trump in the wake of special counsel Robert MuellerRobert (Bob) Swan MuellerKamala Harris says her Justice Dept would have 'no choice' but to prosecute Trump for obstruction Kamala Harris says her Justice Dept would have 'no choice' but to prosecute Trump for obstruction Dem committees win new powers to investigate Trump MORE's probe into Russian election interference, but the president is increasingly ignoring subpoenas and telling officials not to testify.

Former White House counsel Don McGahn on Tuesday defied a subpoena from the House Judiciary Committee after being advised to do so by the administration, prompting Judiciary Chairman Jerrold NadlerJerrold (Jerry) Lewis NadlerWatergate figure John Dean earns laughter for responses to GOP lawmakers The Hill's 12:30 Report - Presented by MAPRx - Nadler gets breakthrough deal with DOJ on Mueller docs The Hill's 12:30 Report - Presented by MAPRx - Nadler gets breakthrough deal with DOJ on Mueller docs MORE (D-N.Y.) to accuse Trump of witness intimidation.

“Our subpoenas are not optional,” Nadler said Tuesday. “Mr. McGahn has a legal obligation to be here for his scheduled appearance. If he does not immediately correct his mistake, this committee will have no choice but to enforce the subpoena against him.”