A message on Bob Newhart's Twitter account notes that the TV icon has canceled a scheduled appearance headlining an annual summit for the anti-LGBT Legatus Group alongside Rick Santorum and Bill Donohue.

Newhart tweeted:

Upcoming Bob Newhart Tour Date Change — Bob will not be performing at the Legatus Summit in Orlando FL on February 6

No explanation was offered for the cancellation.

GLAAD writes:

There was no further statement given. However, it is possible that Newhart, like many people were unaware that Legatus was such a rabid anti-LGBT organization. The organization was created by former Domino's Pizza CEO, Thomas Monaghan, for Roman Catholic businesspeople, and membership is only available to top level executives…

…Two petitions were created, asking Newhart to reconsider his gig with Legatus. One, created by Faithful America, got about 17K sigs calling on Newhart to cancel his Legatus gig. The other was created on Change.org by a transgender comic and former Roman Catholic, who also asked Newhart to back out of the summit.

For more on the Legatus Group read HERE.