Harry Truman actually said...

During the war, this long-standing tendency toward economic concentration was accelerated.

Thus, in my State of the Union Message in January, 1947, I said:

The Committee's study showed that, despite half a century of antitrust law enforcement, one of the gravest threats to our welfare lay in the...

In an effort to assure full opportunity and free competition to business we will vigorously enforce the antitrust laws.