The pair were attending the Ambrosetti Forum in Italy's Lake Como on Saturday.
The documentary "EuroTrump" got unprecedented access to the peroxide-blonde politician during the election campaign, but some critics feel
The event has been arranged by Dutch anti-Islam leader Geert Wilders and Flemish nationalist Filip Dewinter.
Populist politics are likely to remain in the mainstream despite Le Pen's defeat, the third blow in six months to Europe's far right.
The apparent defeat of right-wing populism is not as simple as it looks.
The result was a relief to mainstream parties across Europe, particularly in France and Germany, where right-wing nationalists hope to make a big impact in elections this year.
The far-right, anti-Islam Dutch party leader has been gradually building a following and cultivating a career as one of Europe's most established populist politicians.
Steve King said that "we can't restore our civilization with somebody else's babies."
Dutch government barred Turkish ministers from speaking in a diplomatic row over Turkey's attempts to rally Erdogan supporters overseas.
Anti-Islam Party of Freedom expected to get 30 or more seats in the 150-seat Dutch parliament.
Wilders said that Rutte's refusal to work with him demonstrated 'the arrogance of power.'
Rutte is facing battles against Euroskeptics at home.
The Freedom Party leader was charged over his appearance at a local election rally in 2014.
The far-right Dutch politician said Europe was "imploding" due to weak leaders and open borders.
Experts say right-wing can make capital out of atrocities.
Wilders has praised the rise of the far-right as a "patriotic spring".
The Australian Liberty Alliance is based on Wilders' popular Party for Freedom.
In Europe, voters are increasingly turning to parties critical of mass immigration.
Geert Wilders, a polarizing Dutch politician and anti-Islamic campaigner who is on an Al-Qaeda hit list, was among the speakers at the event.