Lack of space Pool coverage is sometimes required because of the nature of the news event being covered. For example,
judges will often allow only one broadcast camera in the
courtroom during a trial. As a result, interested broadcasters will select one of their own to provide the "pool camera" for the day, with that organization agreeing to share the footage with all other broadcasters in the pool. Similarly, in the United States a daily rotating pool is set up at the
White House for organizations that cover the
president. They are allowed special access to certain events with the understanding that the information and footage will then be shared with the rest of the
White House press corps. For instance, when the president meets with a foreign dignitary, the two will sometimes make a statement together in the
Oval Office. Since it is not possible to accommodate all interested journalists in that room, pool coverage is the only practical way to handle the event.
Controlling expense At other times, pool coverage takes place as a more cost-effective way of covering events that only occasionally "make news." For example, the major networks rely on a pool feed of the daily briefing at the
State Department for their live coverage, since the press conference is usually only of national interest when there is a significant breaking story relating to international
diplomacy. Since "coverage" of such an event consists merely of pointing a camera at a person standing behind a
lectern, a pool feed is a practical means of ensuring the event will be available as needed without all five major US TV news outlets paying for their own individual live crews.
Large events Pool situations are also often set up because of the physical immensity of certain events. One prominent example of this was the international broadcast of the
state funeral of John F. Kennedy, which involved four major venues and a lengthy
procession. Likewise,
presidential inaugurations and
political conventions tend to involve pool coverage in the US (particularly since there is no
state broadcaster that would naturally handle the coverage on its own). == Press pool versus host feed ==