WASHINGTON (AP) — Two senators hope to require political groups to name the donors who spend millions of dollars to influence federal campaigns.
Their legislation would require so-called super PACs to reveal their sources of money just as federal candidates must do.
Outside groups spent $1 billion in efforts to help or attack various candidates in the 2012 elections. Some individuals gave $1 million or more.
These independent groups generally do not have to identify their donors. Critics say major influences on elections should be more transparent.
The Senate bill is sponsored by Democrat Ron Wyden of Oregon and Republican Lisa Murkowski of Alaska.