WASHINGTON (AP) — Congressional Republicans are pushing to block an Obama administration rule designed to protect water quality in small streams, tributaries and wetlands before it goes into effect later this year.

The Senate Environment and Public Works Committee approved legislation Wednesday to force the Environmental Protection Agency and the U.S. Army Corps of Engineers to withdraw and rewrite rules issued in May that clarify which of those smaller bodies of water are regulated under the Clean Water Act.

Republicans in Congress say the rules are overreach and could be a costly and confusing burden for landowners and farmers. The House passed a similar bill last month, which the White House threatened to veto.

The EPA says the rule would protect those waterways against pollution and safeguard drinking water for 117 million Americans.