(JTA) — A Texas congressman used an Adolf Hitler comparison to criticize President Obama for not attending the Paris unity march.

“Even Adolph Hitler thought it more important than Obama to get to Paris. (For all the wrong reasons.) Obama couldn’t do it for right reasons,” Rep. Randy Weber, a Republican, said in a Twitter post on Monday evening.

The American Jewish Committee on Tuesday in a statement called the tweet “outrageous. ”

“The notion that President Obama and Adolf Hitler would be mentioned in the same sentence is beyond reprehensible,” AJC Executive Director David Harris said.

“We fully understand the legitimacy of the debate over U.S. representation at the major rally in Paris on Sunday. However, resorting to comparisons with the leader of the Third Reich, who was responsible for nearly 60 million deaths, including six million Jews, as well as brutal occupation policies, including in Paris, should have no place in American political discourse.”

Greg Rosenbaum, chair of the National Jewish Democratic Council board of directors, also slammed Weber.

“For any public official to compare our nation’s president to the perpetrator of the Holocaust is simply unacceptable,” he said. “As a member of Congress and especially as a member of the House Foreign Affairs Committee, one would hope that Rep. Weber would know better than to make such an outrageous remark.”

Both groups called on Weber to apologize.

The White House acknowledged Monday that it should have sent a higher-level representative to the anti-terrorism rally in Paris.

The United States was represented by Jane Hartley, the American ambassador to France.

Over 40 world leaders and more than 3.7 million people attended rallies in Paris and elsewhere in France in response to the killing of 12 people at the French satirical magazine Charlie Hebdo and four others at a kosher market in Paris, as well as a policewoman.