President TrumpDonald John TrumpTrump pushes back on recent polling data, says internal numbers are 'strongest we've had so far' Illinois state lawmaker apologizes for photos depicting mock assassination of Trump Scaramucci assembling team of former Cabinet members to speak out against Trump MORE's daughter-in-law Lara TrumpLara Lea TrumpWhat kind of madness will Democrats back this time? Lara Trump to launch 'Women for Trump' coalition The Hill's 12:30 Report — Presented by MAPRx — Trump jumps into 2020 race MORE remarked Thursday that German Chancellor Angela Merkel's decision to allow migrants into the country was "one of the worst things that ever happened to Germany."

“When there was a march across Europe by a million people who wanted to get into Western Europe, Angela Merkel let them in,” Fox Business host Stuart Varney said during an interview with Lara Trump, an adviser on President Trump's reelection campaign, on the network.

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“It was the downfall of Germany, it was one of the worst things that ever happened to Germany,” Trump responded. “This president knows that, he’s trying to prevent that from happening here.” 

Trump, who is married to the president's son Eric TrumpEric Frederick TrumpHouse chairman warns foreign governments to 'cease and desist' spending money at Trump properties Trump Jr. dismisses conflicts of interest, touts projects in Indonesia New York judge allows portion of lawsuit against Trump and his children to proceed MORE, made the remark as part of a discussion about a migrant caravan that Varney said is headed toward the U.S.-Mexico border. He said that the footage of the migrants reminded him of migrants moving through Europe.

Germany accepted more than 1 million refugees in 2015 during what Merkel called "extraordinary" circumstances following major conflicts in Syria, Iraq and Afghanistan.

President Trump went after Merkel's immigration policies during the 2016 presidential race, at one point calling them "insane" and accusing her of "ruining Germany." The pair have had an at-times strained relationship over other issues such as tariffs, a gas pipeline with Russia and the Iran nuclear deal.

Trump is known for his hard-line stance on immigration, and earlier this year he sparked controversy when he declared a national emergency to reallocate funding for his long-proposed wall at the U.S.-Mexico border after Congress refused his funding demands.