Hillary Rodham Clinton's silence on the email controversy swirling around her is getting louder by the day. On Monday, the potential 2016 Democratic presidential candidate ignored the issue at a forum while a second Democratic senator urged her to speak out – and predicted she will – about her decision to conduct business while secretary of state in a private email account. Republicans are ramping up their attention on the issue. At the White House, spokesman Josh Earnest said President Barack Obama indeed knew she was using a nongovernment account during her tenure. Obama had indicated earlier that he only learned of that from recent news reports. EMAILS? WHAT EMAILS? Hillary Clinton didn't address her growing email scandal on Monday as she spoke about global progress on the role of women . SCRIPTED: When Melinda Gates (left), Chelsea Clinton (center) and Hillary Rodham Clinton (right) participated Monday in the unveiling of a Clinton Foundation report on women's rights, nothing was left to chance . HE'LL HANDLE IT: White House press secretary Josh Earnest said Monday during his press briefing that President Obama exchanged emails with Hillary Clinton at her private, non-government email address . Earnest said the president actually learned from those news reports of Clinton's privately run email server, but was familiar with her private account earlier because the two had exchanged emails when she was in office. Obama did not know at the time that she was using private email exclusively, Earnest said. Clinton spoke at a carefully choreographed two-hour event involving her No Ceilings project at the Clinton Foundation, highlighting economic and educational opportunities for women and girls. She took no questions. When she sat down to lead more informal conversations with invited speakers, participants appeared to be reading from teleprompters. Clinton is under scrutiny over whether she fully complied with federal laws requiring government officials to preserve written communications involving official business. NODS APPROVINGLY: Former US President Bill Clinton, center, watched from the audience during the 'No Celings' event in New York . Democrats have defended her but Democratic Sen. Dianne Feinstein of California made waves Sunday when she urged Clinton to offer a detailed explanation. 'From this point on, the silence is going to hurt her,' Feinstein said. On Monday, Democratic Sen. Amy Klobuchar of Minnesota said Clinton will probably address the matter – and should. 'I think that you're going to hear something from Secretary Clinton this week,' she said on MSNBC. 'I'm fairly certain it will be soon. I think that's very important.' Last week, Clinton said in a Twitter message that she wanted her emails released by the State Department as soon as possible – but did not address why she does not put them out herself immediately. Clinton's spokesmen and the State Department have said she never received or transmitted classified information on her private email account, in which case there would be no concerns that disclosure of her messages could compromise national security. The State Department is reviewing 55,000 pages of emails that she has turned over and Republicans in Congress have said they plan to review her email practices.
The White House now says Obama exchanged emails with Clinton at her private, non-government email address while she led State Department . Tightly controlled even didn't provide any unscripted moments . Clinton took no questions frmo the audience . Invited speakers could engage her in conversation but read their comments aloud from teleprompters .