President Donald Trump delivers a prime-time address to the nation from the East Room of the White House in Washington, D.C., on Thursday. Pool photo by Saul Loeb/UPI | License Photo

July 16 (UPI) -- President Donald Trump on Thursday made sweeping, largely unsupported claims of widespread problems with U.S. elections, many of which have been debunked or overstated, as he called on Congress to pass legislation he says would protect the electoral system but critics describe as voter suppression.

During his roughly 25-minute prime-time speech to the nation, Trump attempted to make his case for measures needed to address the alleged vulnerabilities, stating, "Our elections were left vulnerable to being rigged and stolen, and the trust of the American people was lost."

"This cannot be allowed to continue," he said.

The speech was delivered only months before November's midterm elections, on which Trump has increasing focused, having repeatedly warned that if Republicans lose their slim majority in the House to Democrats, impeachment proceedings and investigations will follow.