The PROMISE Act would create a procedure through which the bipartisan Social Security Advisory Board (SSAB) would make recommendations to Congress to achieve a period of Social Security solvency for 50 years. He said it would be "absurd, anti-democratic and unacceptable" to decide the fate of Social Security so close to midterm elections. Sanders alternatively proposed cutting caps on Social Security income taxes, while pointing out that SpaceX CEO Elon Musk pays the same amount to the program as someone earning $184,500 a year. "We will strengthen and expand Social Security by requiring the wealthiest Americans to finally pay the same percentage of their income into Social Security as tens of millions of working people do today," he wrote in the letter. "That is how the Democratic Party begins to regain the trust of the American people," he said.