JEFFERSON CITY, Mo. (AP) – The Missouri Senate has unanimously voted to pass a bill that takes aim at campaign funds of legislators who become lobbyists.

The Kansas City Star reports that the bill approved Thursday limits the ways in which money in a campaign committee can be invested and bans elected officials from holding on to their campaign money if they become lobbyists.

Under the bill, elected officials would have to dissolve their campaign committee when they register as a lobbyist with the Missouri Ethics Commission. Any money they have would have to be returned to donors, donated to a political party organization or given to charity.

The measure was amended to include a requirement that political nonprofits run by candidates’ staff or spouse must disclose their donors.

The bill now returns to the House.