According to The Seattle Times, "at least five Jewish institutions in Seattle have received suspicious envelopes, with four containing white powder, since Nov. 3."
Weiss mentioned that the email provided a phone number for further information.
Aron Verständig, President of the Swedish Jewish Communities, expressed his gratitude and the broader significance of this visit.
On Sunday, separate rallies to free the 240 people Hamas is holding hostage and to call for a ceasefire drew thousands of people in Sydney.
Park Avenue Synagogue Rabbi Elliot Cosgrove has stepped up since October 7 like few others, raising millions for Israel's war and rebuilding efforts and leading the fight against antisemitism.
Montreal police said that no one was injured and the damage to the buildings was minor as Prime Minister Justin Trudeau condemned the incident.
A video taken Wednesday shows heavy damage to the site, including to the fenced-off grave of a 16th-century rabbi.