Uline, a major supplier of cardboard and paper goods, is owned by Dick and Liz Uihlein, who have emerged as prominent political donors in the United States. Their financial contributions have significantly impacted various political campaigns, particularly those aligned with far-right ideologies. Notably, they have supported candidates such as Doug Mastriano, a Pennsylvania gubernatorial candidate linked to the January 6 rally, and Jim Marchant, a Nevada Secretary of State nominee who opposed the certification of Joe Biden's election victory in 2020.

The Uihleins have contributed over $121 million to political causes in the last two years, primarily supporting Republican candidates and initiatives that oppose taxes, unions, abortion rights, and marijuana legalization. Their wealth, largely derived from Uline, has seen substantial growth, particularly during the COVID-19 pandemic, which increased demand for shipping supplies.

Historically, the Uihlein family has deep roots in conservative politics, with connections to the John Birch Society and other far-right movements. Dick Uihlein has publicly stated that his political views were influenced by his father, who emphasized capitalism and criticized socialism. The Uihleins' political activities reflect a desire to maintain traditional values, often opposing progressive social changes.

Uline's corporate culture mirrors the Uihleins' political beliefs, with strict employee policies and a notable lack of political neutrality in the workplace. The company has hosted events featuring conservative figures and has faced backlash from liberal customers due to its owners' political affiliations. Despite this, Uline continues to thrive, serving a diverse clientele that includes both high-end brands and government agencies.

The Uihleins are also taking steps to preserve their wealth through financial strategies designed to minimize estate taxes, ensuring that their influence in politics and business may continue for generations.