A conservative Super PAC has reported spending over $300,000 on media ads against Senate Majority Whip Richard Durbin, D-Ill., who is up for re-election this year.  

Americas PAC  reported  it had receipts of $400,000 and disbursement of $383,596 between April 1st and June 4th. The PAC has $22,202 cash on hand as of June 4th.  

The only donor during this period to the Super PAC was Richard Uihlein , CEO of Uline Corporation, an Illinois distributor of shipping and packaging materials. Uihlein contributed $400,000 on April 15th. In March, he gave $50,000.  

From April through June 4th, the PAC reported spending $318,980 on media production and media placement of advertisements as independent expenditures opposing Sen. Richard Durbin, D-Ill.  The PAC also spent $31,216 on media production and placement of advertisements as independent expenditures supporting U. S. House candidate Steven Dane Russell, R-Okla., a tea party supported candidate.  

With this $400,000 contribution, Uihlein has gone over the $3 million mark in 2013-2014 contributions to super PACs. He has given $3,030,000 including $1,780,000 to Liberty Principles PAC; $500,000 to Club for Growth Action; $450,000 to Americas PAC; and $300,000 to Senate Conservatives Action. In the 2011-2012 cycle, he gave $1,890,000 to super PACs.