<a href="https://en.wikipedia.org/wiki/Vietnam_War" id="mwAZY" rel="mw:WikiLink" title="Vietnam War">Vietnam War</a>: The <a href="https://en.wikipedia.org/wiki/United_States_Congress" id="mwAZc" rel="mw:WikiLink" title="United States Congress">U.S. Congress</a> places a $1<span id="mwAZg" typeof="mw:Entity"> </span>billion limit on military aid to <a href="https://en.wikipedia.org/wiki/South_Vietnam" id="mwAZk" rel="mw:WikiLink" title="South Vietnam">South Vietnam</a>.