Stephen Moore, a member of the Wall Street Journal's editorial board and one of the most prolific boosters of supply-side economics, will join the Heritage Foundation as its chief economist, the think tank announced Tuesday morning.

Moore told Heritage that he "really wanted to be on the front line of the policy debate" in D.C. and that he will concentrate on advancing policies that increase the rate of U.S. economic growth. Moore is well known for advocating policies such as lowered tax rates and spending cuts. His most recent book, Who's the Fairest of Them All?, makes the case that free-market economies best promote equity for countries, including the U.S.

Moore has worked for the Cato Institute and served an earlier stint at the right-of-center Heritage Foundation. He also founded the Club for Growth, a fiscally conservative political organization known for helping primary candidates take on GOP incumbents.

Moore, 53, is also a dedicated advocate of increased immigration to the U.S. -- a stance that could conflict with prevailing sentiment at Heritage. Heritage and its political arm, Heritage Action, have been among the most vocal critics of the comprehensive immigration reform bill that passed the Senate in the summer before stalling in the Republican-led House.

Moore addressed the tension between his own views on immigration and Heritage's in the think tank's announcement. "Jim DeMint and I may not agree on everything about immigration, but what Jim wants me and others to do is develop a pro-growth immigration policy for the country. I don't want Heritage to be viewed as anti-immigration. We all know immigration is vitally important to our economy."