That's the question that has been swirling in the media this week. The answer may lie in how "Christian" is defined and whether the Mormon church, to which Beck belongs, considers Protestants to be Christians.
The Church of Latter Day Saints insists that all converts, even those who have already been baptized, be baptized again in the Mormon church. Those who worship in non-Mormon churches participate in the what the church calls Great Apostasy' defined below:
The Great Apostasy occurred after the Savior established His Church. After the deaths of the Savior and His Apostles, men corrupted the principles of the gospel and made unauthorized changes in Church organization and priesthood ordinances. Because of this widespread apostasy, the Lord withdrew the authority of the priesthood from the earth. This apostasy lasted until Heavenly Father and His Beloved Son appeared to Joseph Smith in 1820 and initiated the restoration of the fullness of the gospel.
Do Protestants think that Mormons are Christian?