Trump: "54% of prisoners in Greece are immigrants"

During a speech at the United Nations General Assembly, Donald Trump mentioned Greece, stating that 54% of prisoners in Greek prisons are immigrants.
The American president used this statistic as an example to support his views on uncontrolled immigration, which he described as "the number one political issue of our time." Addressing European leaders, he stated, "It is uncontrolled, your countries are being destroyed."
Besides Greece, Trump also mentioned that "almost 50% of prisoners in German prisons are immigrants, 53% in Austria, and 72% in beautiful Switzerland." He also accused the UN of "funding an attack against Western countries and their borders."
Trump argued that "the United Nations is funding an attack against Western countries and their borders" and that the UN "is supposed to stop invasions, not create and fund them."
In closing, the American president sent a message of support to all countries facing immigration problems, encouraging them to defend their citizens.