Trudeau also expressed his condolences for the victims of the shooting at the Capital Gazette newspaper in Annapolis, Maryland, the Canadian statement said.
Trump blamed Iran for "orchestrating an attack" on the embassy in a Tuesday morning tweet.
Trump spoke during an event showcasing the Paycheck Protection Program, a loan program designed to help small businesses weather the pandemic.
Trump told reporters at the White House on Friday that he was still open to holding a summit.
Trump has locked himself in a stalemate with congressional Democrats in the dispute over his demand for more than 5 billion US dollars for funding a wall along the US-Mexico border.
Trump has repeatedly called polls showing him trailing Biden "fake" and from time to time touted what has been called "silent majority" supporting his presidency and re-election.
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Trump and his fellow Republicans have sought to focus on the caravan and immigration ahead of the midterm elections, where his party is fighting to maintain control of the House and Senate.
Trump has also instructed current and former members of his administration not to testify or produce documents, leading senior officials like Secretary of State Mike Pompeo to defy House subpoenas. Democrats say that behavior constitutes obstruction of Congress, forming the basis of the other impeachment charge.
Trump has sought to blame Democrats, saying their support for passage of a broader immigration bill would end the separations.
Trump, Biden spar over economy on Labor Day - World - Chinadaily.com.cn