GOP bill cracks down on 'loophole' allowing foreign donors to pump dark money into US elections

A new bill aims to crack down on foreign billionaires using dark money networks to fund ballot measures in the United States using a workaround that critics say violates federal law.

The move comes after the Senate was briefed on a new report from Americans for Public Trust that shows Swiss billionaire Hansjorg Wyss has sent more than $243 million to the Sixteen Thirty Fund which then invested $97.6 million in ballot campaigns across 25 states over the past decade. Those states included the key swing states of Michigan, Ohio, Colorado, and Nevada. Andrew Mark Miller is a reporter at Fox News. Find him on Twitter @andymarkmiller and email tips to AndrewMark.Miller@Fox.com.

The tens of millions of dollars from the Sixteen Thirty Fund, which has also been funded by George Soros, went into ballot measures promoting abortion access, lessening drug penalties and prison sentences, raising the minimum wage, automatic voter registration and other progressive causes.