WASHINGTON (AP) - Two conservative religious groups are saying they have faced unusual scrutiny from the Internal Revenue Service.
 
The son of Rev. Billy Graham and leaders of the Jewish organization Z Street say they believe the IRS targeted them because they advocated for conservative causes.
 
In a letter Tuesday to President Barack Obama, the Rev. Franklin Graham says charities built by his father, Billy Graham, may have received extra scrutiny from the IRS because they advocated against gay marriage while the elder Graham appeared in ads urging support for candidates who oppose abortion.
 
Members of Z Street filed a lawsuit in 2010 after the group's application for tax-exempt status stalled. The group's president, Lori Lowenthal Marcus, told Fox News that she believes her organization was targeted because of its views on Israel.