While Canada can bar convicted felons from entering the country, there is no evidence the meeting came in Florida because Trump is not allowed in Canada. A spokesperson for the Canadian Border Services Agency said waivers can be granted on a case-by-case basis, and a Canadian immigration lawyer said a permit allowing Trump to enter should be granted with little difficulty.
https://www.usatoday.com/story/news/factcheck/2024/12/13/trump-canada-conviction-ban-fact-check/76968398007/
Can Trump travel outside the U.S.?
Yes. As president, Trump will have a diplomatic passport enabling him to travel to foreign countries for official business and can also keep a regular, or tourist passport. People sentenced to incarceration or probation can have their passports denied or revoked, but that isn't the case with Trump.
Some countries restrict or reserve the right to prohibit visits from people with felony convictions, including Canada, the United Kingdom and Israel. https://www.nbcnewyork.com/news/president-elect-donald-trump-is-a-convicted-felon-here-are-the-rights-he-is-set-to-lose/6102256/
I'm sure he will get waivers...Bush had to get waivers to travel to Canada. And Trump was already a convicted felon when he visited Israel a few months ago. Also heads of states do not go through customs.