WASHINGTON (AP) — Economists expect a tax overhaul to provide a modest boost to the U.S. economy but are increasingly worried that a rewrite of the North American Free Trade Agreement will take a toll on growth.

The National Association of Business Economics survey found that forecasters expect tax law changes to add 0.2 percentage points of growth to the U.S. economy, down slightly from what they expected in the previous NABE survey in September. The survey was taken Nov. 6-15, before the Senate passed a major tax overhaul early Saturday.