A Donald Trump supporter who stopped paying his mortgage so he could follow the business tycoon on his campaign trail has said he feels “betrayed” by the president, after learning the details of the proposed Republican health care plan.

Mr Moss, who was nicknamed the Trump Troubadour in the lead up to the election, visited 45 of the Republican’s rallies and sang pro-Trump songs on his acoustic guitar, told CNN that he cannot believe the president supports the new American Health Care Act.

“The bill is an absolute betrayal of what Mr Trump represented on the campaign trail,” Mr Moss told the broadcaster. “I feel betrayed.”

The new bill, also known as Trumpcare, has been fiercely criticised for the effect it is expected to have on US citizens. If it is passed, an extra 14 million Americans are predicted to be left without health care insurance next year.

Independent analysts have also predicted that five million fewer people will be covered by Medicaid by 2018, while Democratic senator Bernie Sanders simply stated that “thousands of Americans will die” if the legislation is passed.

For Mr Moss, the problem with the new health care plan is that it will end a policy under Obamacare in a majority of states that saw addiction services covered by Medicaid.

Addiction is a tough subject for Mr Moss, who found his 24-year-old son dead in bed in 2014. He had died from a heroin overdose.

Mr Moss had believed addiction was an important topic for the president too. During his campaign, Mr Trump had called drug addiction a “tremendous problem” and, at a town hall meeting in Ohio last year, he told supporters: “It’s very hard to get out of the addiction of heroin. We’re going to work with them, we’re going to spend the money, we’re going to get that habit broken,” Business Insider reported.

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Mr Trump even addressed his troubadour directly at one rally. Pointing at Mr Moss and addressing the death of the singer’s son, Mr Trump said: “And I know what you went through. He’s a great father, I can see it. And your son is proud of you. Your son is proud of you,” CNN reported.

“I believed everything he said,” Mr Moss told the broadcaster, adding that now he believes the president had simply been looking for votes when he made his promises. He said he feels angry, hurt, and let down by Mr Trump.

The amateur singer’s comments come as Mr Trump’s approval ratings have hit an all-time low for his presidency, despite having only been in office for two months.