WASHINGTON (Reuters) -A united U.S. Federal Reserve agreed to hold interest rates steady at the June meeting as a way to buy time and assess whether further rate hikes would be needed, even as the vast bulk expected they would eventually need to tighten policy further, according to meeting minutes released on Wednesday. While "some participants" wanted to move ahead with a rate hike in June because progress in cooling inflation had been slow, "almost all participants judged it appropriate or acceptable to maintain" the federal funds rate at the existing 5% to 5.25%, the minutes said. The minutes added detail to the policy statement and economic projections issued after the June 13-14 session, when the Fed ended its 10-meeting streak of rate hikes with a decision to hold the benchmark federal funds rate steady.