I suspect that if Trump only talked about economic issues and never mentioned the birther issue no one outside of The Apprentice audience would even know he was running. We've got 20 potential candidates and all of them are talking about the economic issues. How come the circus clown is the only one drawing a crowd?
Nope, Trump talked about economic and others issue for several weeks before he started talking about Obama's BC. It's the MSM and others trying to discredit him who now try to act as if that's practically the only issue he's addressed. He's talked about the BC for barely one month, if that.
Here's a link from 1/21/2011 showing Trump talking about China
Trump calls deal with China 'Peanuts'
What's the earliest date he talked about the BC?
And I think this is the day Trump’s views (with no mention of the BC) began gaining traction. On 1/21/2011, Rush discussed an interview Wolf Blitzer had done with Trump, so that took Trump’s ideas from Wolf’s few hundred thousand viewers to Rush’s twenty million or so listeners. That’s when Trump took off and interviews with Rush and Hannity followed, then he started discussing the birther issue about two months later, etc.
http://www.rushlimbaugh.com/home/daily/site_012111/content/01125108.guest.html