Addressing a summit of European conservative leaders in Malta, Juncker slammed Trump for his support for Brexit as well as his call for other EU members to follow the United Kingdom out of the bloc.
They are by far the most outspoken intervention any senior EU figure has made about Mr Trump and are likely to dismay some European leaders who were hoping to seek a policy of rapprochement with their most important ally.
The EU president, speaking at the center-right European People Party's annual conference in Malta, pulled no punches in attacking Trump's disdain for the US European allies.
Speaking at the European People Party's annual conference in Malta on Thursday, Juncker said he would encourage the independence of the USA states of Texas and OH unless Trump stops urging EU countries to follow the Brexit example and leave the EU.
EU Commission president, Jean-Claude Juncker, said he would push for OH and Texas to split from the rest of America if the Republican president does not change his tune and become more supportive of the EU, reports Express.
Despite Juncker's claim, Trump has not urged other countries besides Britain to leave the EU.
White House blocked Russian Federation testimony
Yates was sacked in January as acting attorney general after she refused to defend the Trump administration's first travel ban. Trump has used Nunes' revelations to defend his unproven claim that Barack Obama tapped phones at Trump Tower.
"Brexit is not the end of everything, but we must make it a beginning of something that will be new, stronger and better".
The Polish eurocrat said the argument over sovereignty - epitomised by the Vote Leave slogan "take back control" - was "a view that is both foolish and dangerous" and that the European Union guaranteed countries' strength of the world stage.
He said that the EPP has a track record of offering concrete solutions, and that many people are now turning to populist parties, because they feel that EPP parties aren't listening to their concerns enough.
In February, in an effort to fix relations, Vice President Pence voiced his support for the European Union.
Should Trump continue encouraging other nations to leave the EU, Juncker vowed that he would support efforts to encourage American states to secede from the union.