Donald Trump

Updated at 12:31 p.m. ET

The Fulton County District Attorney's office has launched a criminal probe into former President Donald Trump's attempts to overturn Georgia's election results, including a call pressuring Republican Secretary of State Brad Raffensperger to "find" enough votes for him. The county includes Atlanta, Georgia's capital.

House impeachment managers will present new evidence during Wednesday's session of the Senate impeachment trial, including video footage from Capitol security cameras, senior aides to the team said ahead of the proceedings.

The aides said the new video footage hasn't been seen publicly before and will provide new insight into the extreme violence at the Capitol the day of the insurrection.

The Senate trial of former President Donald Trump began with a jarring and graphic video of the riot at the Capitol on Jan. 6. The lead House manager, Rep. Jamie Raskin, D-Md., used the montage to tie Trump's message to his supporters that morning to their violent actions breaching the building and attacking U.S. Capitol police.

Members of the Senate on Tuesday were shown a graphic video at the start of former President Donald Trump's impeachment trial, laden with violence and obscenities shouted by the pro-Trump mob that stormed the Capitol building on Jan. 6.

Former President Donald Trump was unhappy with the performance of his defense team on the opening day of his Senate impeachment trial, a source providing informal advice to the team told NPR.

Sen. Bill Cassidy on Tuesday said former President Donald Trump's legal team did a "terrible job" defending Trump when arguing against the constitutionality of moving forward with a Senate impeachment trial. The Louisiana Republican broke with most of his party in voting to proceed with Trump's historic second impeachment trial.

In emotional remarks, lead House impeachment manager Rep. Jamie Raskin detailed his experience during the Jan. 6 attack, including being separated from his family, who barricaded themselves in an office and hid under a desk.

His youngest daughter Tabitha, an algebra teacher, and his son-in-law Hank joined Raskin that day as he worked to ensure the Electoral College results would be tallied.

"It was the day after we buried her brother, our son Tommy, the saddest day of our lives," Raskin said.

The second impeachment trial of Donald Trump will move forward after the Senate voted Tuesday that the trial of a former president is constitutional.

Trump was impeached by the House last month on a charge of inciting an insurrection at the U.S. Capitol on Jan. 6.

The Senate vote on Tuesday was 56-44, with six Republicans joining all 50 members of the Democratic caucus.

During the opening hours of former President Donald Trump's unprecedented second impeachment trial, the current occupant of the White House made it clear that he's continuing to take a hands-off approach to the proceedings.

Asked by reporters whether he planned to watch the trial, President Biden said: "I am not."

When former President Donald Trump's historic second Senate impeachment trial gets underway Tuesday, he'll be relying on a legal trio that was hastily thrust together a little more than a week ago.