Great, Arizona is advising megalomaniacs on how to amp up the crazy now? In other news, I'm deleting Celebrity Apprentice from my DVR queue:

Donald Trump is investing more in the conspiracy theories about President Obama’s birth certificate as he explores his own bid for the presidency.

In his latest embrace of the birther strategy, Mr. Trump has invited Tea Party leaders and a legislator from Arizona to his office in Manhattan on Friday morning to discuss a bill moving through the Arizona legislature that would require candidates for president to prove that they are natural born citizens.

The Arizona group said the call from Mr. Trump on Wednesday came unexpectedly, and the group had spent much of the day Thursday scurrying to make travel arrangements to New York.

“Of course I was surprised, who wouldn’t be?” said the legislator, Representative Carl Seel. “I’m honored to get the ability to meet with him and discuss it, and I want to thank him for being such a supporter of this issue.”

In an interview shown Thursday on the “Today” show, Mr. Trump told Meredith Vieira that he had “real doubts” about whether Mr. Obama was born in this country, and that he has sent his own investigators to Hawaii to research the issue. An NBC News/Wall Street Journal poll showed Mr. Trump as the most favored candidate among Republicans who consider themselves Tea Party supporters.

Mr. Obama has shown a certificate of live birth from Hawaii, which is the standard form of birth certificate in the state, and state officials — including the Republican who was governor during the 2008 campaign — have confirmed its authenticity. Several conservatives, including Glenn Beck and Bill O’Reilly, have criticized Mr. Trump for raising questions about it.

But polls show that many Republicans continue to believe that Mr. Obama was not born in this country, and therefore is not eligible to be president.