Donald Trump’s preoccupation with Barack Obama — and specifically his role in probing Russia’s role in the 2016 election — reemerged in dramatic fashion.

Director of National Intelligence Tulsi Gabbard last week accused Obama and his top officials of committing ‘treasonous conspiracy’ in the investigation surrounding Russia’s 2016 election interference

Besides Obama, President Trump on Tuesday rattled off a list of people he accused of acting criminally "at the highest level."

U.S. President Donald Trump accused former President Barack Obama of "treason" on Tuesday, accusing him, without providing evidence, of leading an effort to falsely tie him to Russia and undermine his 2016 presidential campaign.

Current DNI Tulsi Gabbard sent a criminal referral to Attorney General Pam Bondi Friday raising the possibility the 44th president broke the law by undermining Trump’s victory in 2016.

Hours after Trump falsely accused Obama of trying to rig the 2016 election, the ex-president’s office said it had no choice but to publicly refute the claim.

In terms of day-to-day events, the former president tends to steer clear of the arena. There are, however, occasional exceptions.

The statute of limitations likely limits the Trump administration's ability to prosecute Obama for his alleged actions during the 2016 election.

Outnumbered' panel discusses whether former President Barack Obama should face consequences if he fabricated the Trump-Russia hoax.