Al-Qaida supporters. Terrorist suspects. Anti-Semites and jihadists previously kicked off government boards. All are now welcome in the Obama White House, according to visitor logs.

White House records show dozens of radical Islamists have made hundreds of visits to the White House since 2009. They've met with senior White House officials in discussions that have involved only a handful of participants. Many visits have taken place this year.

The potential security breaches were revealed in a new report by the Washington-based Investigative Project on Terrorism following a year-long probe.

"The open-door policy of the Obama administration to radical Islamists is not only reflected in the number of visits to the White House by Muslim Brotherhood and Hamas front groups but profoundly in major policy areas," IPT director Steve Emerson told IBD.

The meetings have coincided with homeland security policy changes the White House guests and their front groups have clamored for, including purging language such as "radical Islam" and "war on terror" from the government's official lexicon.

The administration also recently censored Islamic references in thousands of pages of counterterrorism training materials used by the FBI, Homeland Security and Pentagon, while firing many of the trainers who wrote or used the materials.

Former FBI special agent John Guandolo, who after 9/11 investigated Islamic terror groups from the bureau's Washington field office, told IBD that the same suspect Islamist figures who have penetrated the White House have also successfully lobbied to purge the names of hundreds of high-risk Islamists tied to the Muslim Brotherhood from the U.S. no-fly list.

Emerson, who later this week plans to release a documentary film, "Jihad in America: The Grand Deception," says the "cleansing" of training materials has handcuffed federal law enforcement efforts to combat Islamic terrorists.

Also, he says the Islamist White House lobbyists have influenced changes in U.S. foreign policy in the Mideast, including "the embrace of Muslim Brotherhood regimes in Egypt and elsewhere, the de facto closure of federal investigations into Muslim Brotherhood networks (in America) and even Attorney General (Eric) Holder's quashing of federal indictments of radical Islamic groups" tied to Hamas and other Palestinian terrorist groups threatening Israel.

Here is a sample of some of the radical Islamists the president has invited to the White House:

• Hussam Ayloush, executive director of the Council on American-Islamic Relations' Los Angeles office.

Ayloush in 2004 defended Hamas terror attacks in comments before Muslim students at UCLA. He met twice with White House officials, including the assistant to Obama's political director.

All told, CAIR officials have logged at least 20 visits to the Obama White House, though the FBI in 2008 ended all contact with CAIR because of its ties to Hamas. CAIR remains on the Justice Department's blacklist of unindicted co-conspirators in the largest terror fundraising scheme in U.S. history.

• Louay Safi, formerly executive director of the Islamic Society of North America, another unindicted co-conspirator front group for Hamas and the Muslim Brotherhood.

Safi himself was named by the FBI as an unindicted co-conspirator in the trial of convicted terrorist Sami al-Arian. He twice met with White House political aides last year. Safi is now in Syria leading the Muslim Brotherhood campaign to take over the government there.

• Esam Omeish, former head of the Muslim Brotherhood-created Muslim American Society and the Washington mosque attended by the 9/11 hijackers.

He visited the Obama White House three times, though he was booted from a Virginia state immigration commission in 2007 after a video surfaced showing him praising violent "jihad" and martyrdom before a crowd of Washington-area Muslims. Omeish personally hired the late al-Qaida terrorist Anwar al-Awlaki as imam of his Dar al-Hijrah Islamic Center. Awlaki ministered to some of the hijackers.

Last month, Omeish, who donated to Obama's 2008 and 2012 campaigns, attended a reception for Egyptian President Mohammed Morsi during his United Nations visit.