1 February 2017 Last updated at 16:54 GMT
Nigel Farage has attacked EU leaders over the US president's 90-day immigration ban for people from seven mainly-Muslim countries.
Mr Farage said the EU's immigration policy was weak, and Mr Trump should be invited to the European Parliament for talks.
Labour London MEP Seb Dance held a sign saying "He's lying to you" behind the former UKIP leader.
Watch video here: http://www.bbc.co.uk/news/uk-politics-38833590