The United States Senate voted on Saturday to subpoena witnesses in former President Donald Trump impeachment trial. The vote was 55 to 45 in favor of calling witnesses.
The second impeachment trial of Trump began on February 9 on charges that he incited an insurrection on the U.S. Capitol on January 6.
The attack on the U.S. Capitol left a police officer and four others dead. Another police officer committed suicide after the assault.
The Senators will decide whether to call one witness or all witnesses.