The former president will address America's Health Insurance Plans (AHIP) at a gathering in Las Vegas in early June, going head to head with the powerful political bloc that was once his nemesis. AHIP's member organizations lobbied aggressively to defeat Clinton's efforts to reform healthcare in 1993.

The group played a more uneasy role in this year's healthcare debate. President Barack ObamaBarack Hussein ObamaOvernight Cybersecurity: What we learned from Carter Page's House Intel testimony | House to mark up foreign intel reform law | FBI can't access Texas shooter's phone | Sessions to testify at hearing amid Russia scrutiny Russian social media is the modern-day Trojan horse Trump records robo-call for Gillespie: He'll help 'make America great again' MORE and Democrats made a concerted effort to bring AHIP on board, only to see that effort collapse late in the debate as AHIP released a report critical of Democrats' legislation. President Obama's final push for reform included strong attacks on insurance industry practices.

When the House finally passed the Senate bill last month, AHIP released a terse statement criticizing the legislation.

“The access expansions are a significant step forward, but this legislation will exacerbate the health care costs crisis facing many working families and small businesses," AHIP President Karen Ignagni said.

The theme of Clinton's speech will be "embracing our common humanity," according the group's website

Other speakers at the event include Obama healthcare adviser David Cutler, former Senate Majority Leader Bill Frist (R-Tenn.), former Labor Secretary Robert Reich, and former Health and Human Services Secretary Donna Shalala. Both Reich and Shalala served in Clinton's administration.