Lobbying and advocacy by religious groups in Washington have exploded in recent decades, increasing fivefold since 1970 to become a nearly $400 million industry, a new Pew report finds.

More than 200 groups are doing faith-related lobbying and advocacy in the nation’s capital, compared to fewer than 40 in 1970, according to the report. Put together, the groups employ at least 1,000 people.

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