"There are probably, possible accomplices that need to be arrested which is why I won't give you additional details", he said.
Remember when President Obama urged the British to vote to stay in the European Union, and they completely ignored him?
However, the AP also noted that Trump has already gone against Le Pen's wishes in bombing Syria, a country whose president Le Pen backs, and in alienating Russian Federation. Some people really like her ideas, while others do not.
Le Pen - who succeeded her father, the crypto-fascist Jean-Marie Le Pen, as head of the National Front in 2011 - has courted Trump support in the past. And her inner circle still includes old friends from her student days in Paris who were members of a radical group known for violence and anti-Semitism.
The poll was conducted on Wednesday and Thursday - before the shootout in which the attacker also died and two other police officers were injured. Emmanuel Macron, a centrist candidate just ahead of her in the polls, cautioned against giving into fear and noted that the fight against extremism can not be won overnight.Le Parisien daily described the two reactions as "diametrically opposed". Her campaign lost steam in recent weeks as centrist, pro-EU Macron gained ground. Obama, when he was in office, encouraged Britain not to leave, though it ultimately voted to do so anyway. Yet during a White House news conference Thursday, the president said he believed in a strong Europe.
"He made possible what had previously been presented as impossible", she said in an interview just days after the November 8 American election.
Authorities are unequivocal in labeling the attack terror-related, and if correct, its timing - a mere three days before the election's first round - can only have been deliberate.More news: Who's behind rallies seeking tax returns
Ms Le Pen used the aftermath of the Champs-Elysees attack - which Islamic State has claimed it carried out - to call for the government to immediately expel foreigners being monitored by intelligence services and reinstate France's borders.
In Paris today, sources said the man who shot dead a French policeman in a militant attack had served time for armed assaults on law enforcement officers.
While Trump campaigned on a message of "America First", Le Pen has campaigned on promises to make France, "more French". "Will have a big effect on presidential election!".
Trump made the comment a came a day after a gunman opened fire on police officers on Paris's Champs-Élysées, one of the most famous streets in the world.
U.S. President Donald Trump weighed in on the latest attack on Twitter, writing that "the people of France will not take much more of this".
But Prime Minister Bernard Cazeneuve accused her of attempting to use the shooting for political gain, saying she was "seeking, as she does after every tragedy, to take advantage of it".