He specifically mentioned Angela Merkel, the German Chancellor, claiming "crime in Germany is way up" and immigration was why "the people of Germany are turning against their leadership".
Trump's claim on crime goes against crime figures in May that pointed to an overall decline in Germany over the past year. The figures showed that 5.76 million crimes were reported in 2017 - a drop of 5 per cent from 2016 and the lowest number since 1992.
Merkel's Bavarian allies yesterday gave her a two-week reprieve to set tougher border controls in the EU, saying that if she did not meet the deadline they would start rejecting asylum seekers at the German border.
The news came as the populist Italian Interior Minister Matteo Salvini pledged to start expelling Roma gypsies.
Following days of tense talks over the "migration master plan" of Horst Seehofer, the German Interior Minister, Merkel was given until an EU summit later this month to find a solution, also giving her time to consult other countries affected by the move such as Italy, Greece and Bulgaria.
Seehofer, leader of the CSU, which formed a coalition with Merkel's CDU party, said he wanted to shut the borders to all asylum seekers who have already been registered in other EU countries en route to Germany.
If the EU negotiations were to fail, Seehofer said he would go ahead with turning away asylum seekers at the German border as early as the first week of July.
Meanwhile, Salvini called for a census to be carried out of Roma gypsies in Italy, saying that he would expel any who did not have the legal right to be in the country.
As part of its election campaign, his party, the League, pledged to bulldoze illegal Roma camps. Many Roma people are Italian citizens who have been in the country for generations, while others come from Eastern Europe.