Nearly half of Americans (46%) think the country is headed in the wrong direction when it comes to the incoming president’s policies to lower healthcare costs, while 31% say it’s on the right track, according to the latest West Health-Gallup survey released today.

With Uncle Sam running chronic trillion-dollar deficits, one proposal to increase revenue has been to raise it from the wealthiest Americans: through a tax, not on their yearly income, but on their accumulated wealth.

U.S. Sen. Elizabeth Warren, D-Mass., introduced one version of a wealth tax, which would tax net worth over $50 million at 2% and net worth over $1 billion at 3%. But it’s never come to a vote, and critics charge it would reduce gross domestic product, partly by reducing people’s incentives to save money.

But new research from Texas McCombs questions whether wealth taxes reduce savings. Marius Ring, an assistant professor of finance, investigates the real-world effects of a wealth tax in Norway — one of the few countries that currently implements one.