Story highlights Tuesday was the first time reporters covering Trump have been able to ask him about his "birther" reversal

Trump asserted Friday that he now believed Obama was born in the US

Greensboro, North Carolina (CNN) Donald Trump declined Tuesday to answer reporters' questions about his sudden shift on the issue of President Barack Obama's birthplace.

Trump ignored reporters' questions during a stop at a restaurant here, the first opportunity journalists covering his campaign have had to ask the Republican nominee about his reversal on the issue.

In a brief statement on Friday, Trump asserted that he now believed Obama was born in the US and then refused to answer reporters' questions after the press event, which campaign aides told media members would be a press conference.

For years, Trump was one of the most prominent and vocal pushers of the "birther" conspiracy theory that falsely claimed Obama was not born in the US.

Obama produced his long-form birth certificate in 2011 that proved he was born in Hawaii.

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