Texas Rep. Ron Paul is emphasizing his anti-abortion views as he looks to build on his tea party and libertarian base ahead of a key test vote in Iowa.

The Republican presidential candidate on Saturday said that government cannot play God and make decisions on abortions. He says -- quote "all life is precious" and must be defended.

Paul also highlighted his opposition to wars in Iraq and Afghanistan as well as the PATRIOT Act. He says the United States cannot defend liberty abroad while denying U.S. citizens their own rights.

The candidate also called U.S. foreign policy misguided. And he repeated his call to audit the Federal Reserve.

He spoke as thousands of Iowans cast ballots for a nonbinding test vote of GOP presidential candidates.