Allegations:

Russia & 2016 Election Interference
Trump’s campaign may have coordinated with Russia to influence the 2016 election.

Trump publicly encouraged Russia to locate Hillary Clinton’s emails.
Findings

The Mueller Investigation found:

Extensive Russian interference.
Numerous contacts between Russia-linked individuals and the Trump campaign.

No criminal conspiracy charge was established.

The report documented multiple potential instances of obstruction of justice, but did not prosecute due to DOJ policy on indicting a sitting president.

Obstruction of Justice Concerns
Allegations:

Attempted interference with federal investigations, including:

Trump firing FBI Director James Comey
Pressuring officials to limit or end investigations

Public and private attacks on investigators and witnesses outcome.

Not charged while in office.
Actions heavily criticized by legal scholars and lawmakers.

Abuse of Power & Impeachments
First Impeachment (2019)
Allegation

Pressured Ukraine to investigate a political rival while withholding military aid.
Outcome

Impeached by the House.
Acquitted by the Senate.

Second Impeachment (2021)
Allegation:

Incitement of insurrection related to the January 6 Capitol attack.
Outcome

Impeached again.
Acquitted, though several senators cited constitutional concerns rather than innocence.

2021 Capitol Attack Allegations

Repeated false claims that the 2020 election was stolen.
Encouraged supporters to challenge certification of electoral results.
Failed to act promptly to stop violence.
Investigations

Congressional inquiry concluded Trump played a central role in events leading to the attack.
Criminal investigations continued after he left office.

Allegations:

Trump businesses accepted payments from foreign and domestic governments.
Violated the U.S. Constitution’s Emoluments Clauses.
Outcome

Lawsuits dismissed on procedural grounds after he left office.
No definitive court ruling on the merits while he was president.