Trump has tweeted about Barack Obama many times over the years, mostly in a highly critical and often inflammatory way, rather than in a single “one big tweet.”

Quick Scoop: Key Things Trump Tweeted About Obama

Here are some of the most notable lines from Trump’s past tweets and public comments that were widely reported because they were on Twitter or echoed in interviews:

  • He repeatedly promoted the false “birther” conspiracy, claiming Obama’s birth certificate was fake, including a 2012 tweet along the lines of an “extremely credible source” telling him Obama’s birth certificate was a fraud.
  • He insisted for years that Obama was not born in the United States, only backing off in 2016 while falsely blaming Hillary Clinton for starting the rumor.
  • He called Obama “perhaps the worst president in the history of the United States,” a tweet Obama later read aloud and joked about on Jimmy Kimmel Live! (“At least I will go down as a president”).
  • On the campaign trail he echoed the same tone as his Twitter feed, calling Obama “the most ignorant president in our history” and saying he had done a “terrible job” and that his presidency was a “disaster.”
  • He frequently attacked Obama’s policies in tweet‑like phrases, especially the Affordable Care Act, calling “Obamacare” a “catastrophe” that meant “higher prices, fewer choices and lower quality.”

These posts helped define Trump’s online persona: blunt, personal, and often fact‑checked as misleading or false, but highly effective at generating headlines and forum debates.

Mini context: why this still trends

  • Old Trump tweets about Obama often resurface whenever there is new news about U.S. politics or Middle East policy, because people like to contrast his past predictions or insults with later events.
  • Even after leaving office the first time, Trump’s style on newer platforms has kept Obama as a frequent target, which keeps the “what did Trump tweet about Obama” question coming back into trending searches and political forums.

Many forum threads and comment sections now use those old Obama‑related tweets as shorthand examples of Trump’s confrontational online style, especially when discussing presidential behavior on social media.

TL;DR: Trump didn’t have just one famous tweet about Obama; he had a long series calling Obama’s presidency a “disaster,” pushing the debunked birther theory, and labeling him the “worst president,” all of which still circulate in news and forum discussions today.

Information gathered from public forums or data available on the internet and portrayed here.