Axios: Two leading immigration groups — the New American Economy and the American Immigration Council — are merging, in part to prepare for a potential Republican takeover of Congress. Immigration has increasingly become a central U.S. political issue. Pro-immigrant groups have gained influence in recent years through their advocacy and litigation — especially during the Trump era. A possible return to legislative power by the GOP would require more clout, the two groups say. The new group will be named the American Immigration Council.