Some people, including Mr Obama's own former pastor, Jeremiah Wright, believe that AIDS was cooked up by the government to kill blacks.
And that may be possible, thanks to Mr Bush having supported the surge when many people, including Mr Obama, were urging America to cut and run.
Yet, administration spokesmen, up to and including Mr. Obama himself, said otherwise repeatedly.
The Republican National Committee, however, circulated some of Mr. Obama's statements to the press on Tuesday, including a 2006 report indicating Mr. Obama said he would be happy to work for Mr. Blagojevich's 2006 re-election campaign, even though the Illinois governor was under investigation.
The visit will test the sometimes-strained relationship between Mr. Obama and Mr. Netanyahu over issues including U.S. calls to freeze Jewish settlement building in the West Bank and Mr. Netanyahu's wish for the U.S. to take a harder line against Iran's nuclear program.
Critics of this theory (including Christina Romer, head of Mr Obama's Council of Economic Advisers) point out that the rate at which unemployed workers get new jobs has fallen across all industries.
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Naoufal Enhari, Washington correspondent for Agence Maghreb Arabe Presse, Morocco's news service, says the tours expose him to people he would never find on his own, including some who still erroneously believe Mr. Obama is Muslim.
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The prime minister spoke to Mr Obama for 10 minutes about topics including the world economy, Iraq, Afghanistan and the Middle East peace process.
Mr Obama also signed 23 unilateral orders, including an end to a ban on gun-violence research by a prominent federal agency, and a measure promoting responsible gun ownership.
All of Mr Obama's proposals require Congressional action, including the "infrastructure bank", a proposal he introduced in his first term that was never acted upon.
At the suggestion of Mr. Obama's Jewish supporters -- including me -- the candidate visited the beleaguered town of Sderot, which had borne the brunt of thousands of rocket attacks by Hamas.
If she convinces the undecided that Mr Obama is weak among swing voters including this year's favourite, the Reagan Democrat, blue-collar but socially conservative she may drag the contest out until the last primary on June 3rd.
With so many good intentions, and so many initiatives scattered around the world (and an immensely busy domestic agenda, including health-care reform and averting economic collapse), Mr Obama appears to be racing around trying everything without yet achieving much.
And New York City Mayor Michael Bloomberg, a vocal backer of stricter regulation, called on Mr Obama and Congress to pass several gun regulation proposals, including requiring a criminal background check for all gun sales, making gun trafficking a felony and a ban on assault weapons.
Mr. Zuckerberg has also met President Barack Obama several times, including hosting a town hall for the Democratic president at Facebook's headquarters in 2011.
Clinton boosters will hope that the types of downtrodden whites Mrs Clinton needs to win (including in the crucial Pennsylvania primary in April) will not be soothed by Mr Obama's talk.
Mr. Obama would require background checks for private sales between individuals, including those at gun shows and via the Internet.
Mr. Biden worked in Munich to minimize any damage done by Mr. Hagel's comments and to emphasize Mr. Obama's position that he will use all means, including possibly military force, to deny Iran the bomb.
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In the long run Mr Obama would wind Fannie and Freddie down, and has suggested replacements including a federal guarantee to be activated during crises or federal reinsurance sold as a backstop to private insurers.
Republicans have said they don't want to consider new taxes, and want Mr. Obama and Democrats instead to make significant changes to entitlement programs including Social Security and Medicare to reduce their mounting costs, something they are reluctant to do.
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Since his election victory on Sunday, Mr. Hollande has spoken with a slew of world leaders, including President Barack Obama and Japanese Prime Minister Yoshihiko Noda, and prepared a string of international meetings that will start right after he is sworn in next week.
For example, Mr Obama has not yet stopped the armed forces from discharging soldiers including Arabic-speakers for being gay.
Mr Blagojevich faces a series of allegations, including attempting to "sell" President Barack Obama's vacant seat in the US Senate.
She also led Mr Obama among groups who have tended to back him in previous contests, including voters under 30, college graduates and independents.
If Congress and the president could reach even a temporary cease-fire on the budget, Mr. Obama might have an opportunity to advance his other legislative goals, including an immigration overhaul and new gun-control measures.
Mr. Obama's administration is filled with people who share that worldview, including the president himself.
Mr Obama's greater sternness towards Israel is for the general good including Israel's.
Mr. Obama is heard telling his counterpart that he needs time to resolve issues including U.S. plans for a missile defense system in Europe.
Since Mr. Obama proposed the preschool expansion last month, few details have been released, including the price tag.
The Republicans, in turn, agreed to a series of handouts for humbler folk that they had previously resisted, including an extension of benefits for the unemployed, a cut in payroll taxes and a renewal of Mr Obama's supposedly one-off tax credits for parents and college students.
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