The Obama administration has postponed an award for an Egyptian women's rights activist because of anti-Semitic and anti-American comments posted on her Twitter account.

Samira Ibrahim was going to be one of 10 recipients of the International Women of Courage Award.

But the Weekly Standard found that Ibrahim supported the attack on the U.S. Consulate in Benghazi, Libya last Sept. 11.

She also applauded a suicide bombing on a bus last July that killed five Israeli tourists and the Bulgarian bus driver.

"An explosion on a bus carrying Israelis in Burgas airport in Bulgaria on the Black Sea. Today is a very sweet day with a lot of sweet news," Ibrahim tweeted.

And with a reference to Adolph Hitler, she attributed crimes against society to Jews.

"I have discovered with the passage of days that no act contrary to morality, no crime against society, takes place except with the Jews having a hand in it. Hitler," she tweeted in August.

Ibrahim denies writing the messages, claiming her Twitter account was hacked.

But Sen. Mark Kirk, D-Il., calls that claim "dubious."

Ibrahim, for her part, refuses to apologize for her anti-Semitic statements.