(CNN) Sen. Elizabeth Warren called on the House of Representatives to begin impeachment proceedings against President Donald Trump Friday.

The Mueller report lays out facts showing that a hostile foreign government attacked our 2016 election to help Donald Trump and Donald Trump welcomed that help. Once elected, Donald Trump obstructed the investigation into that attack," the 2020 Democratic presidential candidate wrote on Twitter. "Mueller put the next step in the hands of Congress: 'Congress has authority to prohibit a President's corrupt use of his authority in order to protect the integrity of the administration of justice.' The correct process for exercising that authority is impeachment."

Prior to this week, Warren -- like many other Democrats -- had consistently said that she would first need to first see the full report by special counsel Robert Mueller before drawing any conclusions on whether Congress should consider impeachment proceedings against the President. That question has been a divisive one for Democrats in Washington, with many in the party urging caution.

Warren's call for impeachment proceedings could foreshadow other national Democrats -- including additional presidential candidates -- following suit in the coming days.

The Massachusetts Democrat on Saturday doubled down on her support for initiating impeachment proceedings, telling reporters after a campaign rally in Keene, New Hampshire, that she felt "responsibility to speak out" after reading the special counsel's report.

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