In 1970, fewer than 40 secular groups lobbied Congress and the Executive Branch. Now, that number has ballooned to more than 200, with total lobbying expenditures by faith-based organizations approaching $400 million a year.
Nearly 20% of all religious advocacy is by Roman Catholics. Evangelicals account for 18%, Jews 12% and mainline Protestants 8%. Baha’is, Buddhists, Hindus, Muslims and Sikhs also have lobbied in Washington, although in much smaller numbers.
-Noel Brinkerhoff, David Wallechinsky
Lobbying for the Faithful (Pew Forum on Religion & Public Life)