The U.S. Senate has again decided not to consider a controversial bill intended to lift the veil on who is paying for advertisements and other communications that advocacy groups and businesses sponsor to influence elections.

Many advocacy groups had objected to a donor-disclosure provision in the bill.

It was the second time the Senate decided not to take up the bill; the first was in July. The House of Representatives passed the measure in June in response to a Supreme Court ruling.

The bill, known as the Disclose Act, would require corporations that issue political communications, including many advocacy groups organized under Section 501(c)(4) of the Internal Revenue Code, to reveal information about their donors.

The Senate could again reconsider its position on whether to debate and vote on the measure.