U.S. Rep. Lisa Blunt Rochester, D-Del., supports impeachment proceedings against President Donald Trump.

"I now support opening impeachment proceedings," the congresswoman announced on Thursday afternoon.

The announcement comes a day after former FBI Special Counsel Robert Mueller testified on Capitol Hill, answering questions from two House committees about his investigation into Russian interference in the 2016 election.

Blunt Rochester, who does not sit on either of those committees, said that Mueller's testimony made "very clear" that the president was not exonerated, and Trump "wasn't always truthful in the written answers he submitted."

"After two years of investigations, hundreds of pages of documents, and hours of testimony, this much is clear – the Russian government waged a sweeping and systematic attack on our democracy," the Thursday statement reads.

It's a change in tone from last week, when the lone Delaware U.S. House member voted to table a motion to impeach Trump.

Last week, Blunt Rochester said that impeachment is "one of the most serious actions that the House of Representatives can take," and pointed to the six House committees that are currently investigating Trump and his associates.

She said Thursday that she did not reach her latest decision "quickly or lightly," and has "continued to wrestle with the enormity of its consequences."

"The President on ten separate occasions attempted to, or outright obstructed justice," her Thursday statement reads. "It is clear that without the Office of Legal Counsel’s policy against indicting a sitting President, Donald Trump would very likely be charged with a crime. For these reasons, the House should move forward with impeachment proceedings."

She's joining more than 90 other House Democrats who have said they are in support of either impeaching the president or launching an inquiry, according to USA TODAY.

COONS AT THE BORDER:Sen. Coons visits U.S. border detention facility, calls it 'unacceptable'

STATE POLITICS:Transgender activist Sarah McBride is running for Delaware Senate