The Senate Ethics Committee said Monday that lobbyists or lobbying organizations cannot pay for parties honoring senators at national party conventions.

The ruling is a stricter interpretation of the new lobbying and ethics law than the one adopted by the House ethics committee, which has left the door open to lobbyist-sponsored parties that don’t honor specific members.

An event honoring the Nevada congressional delegation, for example, would be prohibited under the Senate ruling, but likely allowed under the House definition.

Public Citizen, a watchdog group, welcomed the Senate Ethics decision.

But the ruling still leaves some wiggle room for fun. Parties honoring “ ‘Nevada Republican Officials’ or ‘Nevada Delegates’ would be permissible,” the committee states.