MINNEAPOLIS (AP) -- Republican presidential candidate Newt Gingrich let his movie on religion in American government do the talking at a gathering of Minnesota social conservatives.

Gingrich interrupted a campaign swing of Iowa on Tuesday for a series of events sponsored by the Minnesota Family Council, including a book signing and screening of a movie he produced, "Rediscovering God in America."

The former House speaker spoke for about 90 seconds -- never mentioning his presidential bid -- before airing the film he helps narrate. It stresses references to God and religion in founding documents and monuments throughout Washington.

Gingrich spent much of the screening in a hotel lobby, a cell phone to his ear.

Gingrich was due to give a dinner speech that organizers closed to news media.

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