By Kanishka Singh

WASHINGTON, Oct 2 (Reuters) - President Donald Trump said the US government will send a one-time $90 payment to more than 20 million ‌Americans enrolled in Medicare, a health insurance program for the elderly, ‌to help offset the cost of their monthly medical insurance premiums.

Trump said on social media late ​on Friday the payments will come from the Medicare Improvement Fund, which he said was given $2 billion by Congress to improve the Medicare fee-for-service program.

The announcement is the latest in a series of financial promises the Republican leader has made to ‌voters heading into the November ⁠midterm elections where control of Congress is at stake.

Trump's Republican Party currently has a narrow majority in both the Senate ⁠and the House of Representatives but his approval rating has been low over his handling of the high cost of living for...