"It is a historic fact that many Poles aided in the murder of Jews, handed them in, abused them and even killed Jews during and after the Holocaust".
"I do not know of any, but there may well be", he said.
The bill approved by the lower chamber of the Polish Parliament makes it a crime, punishable by up to three years in prison, to use statements, such as "Polish death camps", suggesting Poland bears responsibility for crimes against humanity committed by Nazi Germany.
While Trump held bilateral meetings with world leaders in Davos, Switzerland, First Lady Melania Trump visited the United States Holocaust Memorial Museum in Washington, D.C. In a statement issued after her visit, she also noted the "six million Jews lost in the Holocaust and the millions of other victims of Nazi persecution".
"Having spent decades in the field of education, I deeply believe that this must be changed through a campaign of education, not criminalization", said Robert Singer.
Israel's Ambassador to Poland Anna Azari told the Polish PAP news agency that Israel believes the article outlawing blaming Poles for crimes of the Holocaust could open the door to Holocaust survivors being prosecuted for their testimony, should it concern the involvement of Poles in war crimes.
Israel's Ministry of Foreign Affairs conveyed to Kozlowski the "particularly surprising and miserable" timing of the law, pointing out that Friday was the eve of International Holocaust Remembrance Day.
"We will not change any provisions in the bill", said Beata Mazurek, spokeswoman for the ruling conservative-nationalist Law and Justice party, "We have had enough of Poland and Poles being blamed for German crimes".
"This is a shameful disregard of the truth".
Prime Minister Benjamin Netanyahu leads a cabinet meeting at the Prime Minister's Office in Jerusalem on January 28, 2018.
Netanyahu on Saturday evening slammed the legislation as "absurd", and said that he had instructed Israel's envoy to Warsaw to meet the Polish prime minister to convey a "firm stand" against the law.
The reason for the legislation is a long-running battle by Polish authorities to curb a practice in the media and elsewhere of using terms like "Polish concentration camps" to describe the camps built in German-occupied Poland during the war to kill Jews and others.
Prime Minister Mateusz Morawiecki tweeted that "Auschwitz-Birkenau is not a Polish name, and Arbeit Macht Frei is not a Polish phrase".
Israeli President Reuven Rivlin, noting that exactly 73 years had passed since the Auschwitz death camp on Polish soil was liberated, cited the words of a former Polish president about how history could not be faked and the truth could not be hidden. "In addition, they claim that Poles are co-responsible for the Holocaust". "These facts must be taught to the next generation", he added.
"This is proof how necessary this bill is".