"[H]ad I been in Congress at the time of the invasion, I would have cast a vote in opposition." — Donald Trump at an education event on 8-Sep-2016[0]
Considering that the vote was on 11-Oct-2002, and we have audio of Trump expressing hesitant, wishy-washy support for the war on 11-Sep-2002, that is almost certainly not true.
0. https://www.usnews.com/news/politics/articles/2016-09-10/ap-...