After Senate Republicans abruptly canceled a bipartisan measure that was widely supported by blindsided veterans, the veterans protested in anger and indignation.

This would have extended medical coverage to millions of combatants who were exposed to toxic burn pits while serving their country.

Supporters of Sergeant First Class Heath Robinson honor our promise to address the Comprehensive PACT Act

The overwhelming majority of Americans expected that the House-passed bill would be sent to the President for signature.

However, the move shocked and confused veteran groups Wednesday evening.

41 Senate Republicans opposed the bill's passage. 25 of them had supported it one month ago.

The PACT Act would have extended VA health care eligibility for more than 3.5 million post-9/11 combat vets who were exposed while serving in the military to toxic substances.

In June, the Senate passed the original legislation 84-14. Minor changes were made when the legislation was moved to the House. It passed 342-88.

The Senate returned the bill to its original form, but it had not been changed in any significant way. However, the vote and view of 25 senators had.

Although it is not clear what caused the flip, veterans believe that the move was politically motivated.

"It's angering. It's frustrating," stated Tom Porter (54), who developed asthma after spending one year in Afghanistan as a U.S. citizen.

Porter stated that he experienced a severe reaction to his lungs during his first week of deployment and was unable to breathe.

"I know that these senators are getting ready to take a break. He said that he didn't get a rest when he was deployed.