Former US president Donald Trump’s second impeachment proceedings accelerated Tuesday, as House impeachment managers delivered an 80-page memo to the Senate outlining their case for impeachment by emphasizing Trump’s personal responsibility for the violence that erupted at the US Capitol on January 6.

Calling the president’s actions “a grievous betrayal of his Oath of Office,” the memo, drafted by impeachment managers led by Maryland Rep. Jamie Raskin, accused Trump of personally inciting protesters at the January 6 “Save America Rally” to attack the Capitol and impede Congress’ confirmation of Joe Biden as the winner of the 2020 presidential election. The managers emphasized Trump’s role as a direct driver of the violence and asserted that his behavior following the election was a dangerous use of his bully pulpit. The memo claims that these actions irresponsibly “convinced supporters that they were victims of a massive electoral conspiracy that threatened the Nation’s continued existence.”

The memo further builds its case by highlighting numerous instances of Trump’s initial unwillingness to accept the results of the 2020 election, discusses his use of pressure tactics to overturn electoral results in Michigan and Georgia, describes his antagonistic speeches leading up to January 6 that incited violence, and critically notes his final instructions to the increasingly-angry crowd to go to the Capitol and “show strength.” Hundreds were injured, and five died in the resulting violence, which saw members of Congress and the Vice President forced to evacuate the Capitol. These actions, the memo asserts, are enough to show that Trump committed the high crimes and misdemeanors necessary to satisfy a Senate conviction.

However, the likelihood of a Senate conviction is uncertain, given that most Republican senators voted on January 26 to dismiss the upcoming impeachment proceedings as unconstitutional. Trump’s legal team responded to the House’s memo on Tuesday, primarily arguing that it would be unconstitutional for the Senate to convict a president once they have left office and are a private citizen. As the House’s memo states that such a conviction would be constitutional, it is likely that this matter will dominate the trial proceedings.

Trump’s impeachment trial is scheduled to begin February 9.