And when was that, precisely?
When does MSNMC and Fox tell us on the videos?
Sounds like you believe the mainstream media without checking for yourself when she actually said it.
No not always, the date in the one is 2008 (no month given) in another its 2007-2008 which is typical when speaking of the campaign itself, in this case the Hillary Campaign.
Here, on March 19, 2017 Mark Penn, who is the architect of the Hillary Clinton Campaign is writing to Senator Clinton gathering together how to proceed concerning Obama here
Mark writes as if common knowledge between them here
The Muslim rumors are already circulating and thereafter would circulate a photo of Obama dressed in the garb that caused the stir at the time, which is said to be of his visit to Kenya soon after in the Guardian here
Clinton aides claim Obama photo wasn't intended as a smear
A clip of the headline are Clinton aides claims
So we read there of what is circulating concerning Obama already, that he is a muslim (which is a an ideology) and not a race (as Mark Penn in the Clinton acknowledges that Obama is black also in respects to that being a plus (in the same letter). But as far as "what could hold him back"? he wrote again, that
it was his lack of American roots. So without saying there began circulating this photo which played right into the claims (said to be false) that Obama was a Muslim, and Kenya comes to the surface.
It originated with her campaign 2007-2008
Clinton aides (even as the headline suggests) make the claim the photo was not intended as a smear. The architect of Hillarys campaign names what could hold Obama back and goes after his lack of American roots.
And Breitbart (see link below) points out that it was Hillary's supporters, not even Hillary, or her campaign (according to the available information) which began circulating the actual rumor that Obama was born aboard
Writing, " One, Philip J. Burg,
filed one of the more notable lawsuits challenging Obama’s Democratic Party nomination (dismissed for lack of standing)"
Original Birther Hillary Falsely Accuses Breitbart of Birtherism
So you can see the progression and how it come about as MSNBC (a more left leaning media outlet) and Fox (a more right leaning media outlet) agree in the matter through the two videos previously posted.
The same mentioned here
You might not prefer to read Breitbart (and thats fine) but it mentions the same things and gives the links , I provided the videos for the two networks (excluding Chris Matthews from Hardball) and followed the rabbit trails as are laid out.
After it began in 2008 with the Kenya picture circulated by the Clinton aids (and by the time Obama would run again) in 2012 the Kenya theme emerges once more (and this just around the year Trump began to look into this more which was more precisely a little earlier, around 2011.)
Which stated Born in Kenya (where the picture was supposedly taken) which the Clinton aids had begun to circulate after Mark Penn's letter to Clinton about what could hurt him (in respects to his lack of American roots).
However, this is excused to be a simple cleric fact checking error said the Blaze here
Literary Agent Responds to ‘Born in Kenya’ Obama Bio: ‘Nothing More Than a Fact Checking Error’
Trumps issue is not the where Obama was born (as he stated in the video provided) it was about the document. The issue of where he was born (or lacking American roots) originated out of the Clinton campaign. Which is shown in the Architect of her Campaign's strategic letter, and Clinton's aids having been the ones to begin circulating the picture of Obama in Kenya which is followed up by a Hillary supporter, Philip J. Burg being the one to bring the lawsuit on the basis of so much. It was born out of her Campaign, thats where the issue come to the surface and at each place Its either Mark Penn (Hillary's Campaign architect) Hillary aids, or Hillary supporters.
Trump is less about that and about the fraudulent legal document, thats why Trump could just state a belief that counts for absolutely nothing (at all) that Obama was born in the U.S (he knows what he states regarding that only means something to the folks barking about it, but that wasn't his issue (even back in 2011) as the video shows, to him its about legal documentation, and how that was rolling out (back then) as it was later.
The issue of "where" Obama was born originated within her own campaign.
The "legality of" the document itself is that which Trump is looking at not the place of birth.