U.S. President <a href="https://en.wikipedia.org/wiki/Lyndon_B._Johnson" id="mwASQ" rel="mw:WikiLink" title="Lyndon B. Johnson">Lyndon B. Johnson</a>, responding to a <a href="https://en.wikipedia.org/wiki/University_of_Texas_tower_shooting" id="mwASU" rel="mw:WikiLink" title="University of Texas tower shooting">sniper attack</a> at the <a href="https://en.wikipedia.org/wiki/University_of_Texas_at_Austin" id="mwASY" rel="mw:WikiLink" title="University of Texas at Austin">University of Texas at Austin</a>, writes a letter to <a href="https://en.wikipedia.org/wiki/United_States_Congress" id="mwASc" rel="mw:WikiLink" title="United States Congress">Congress</a> urging the enactment of <a href="https://en.wikipedia.org/wiki/Gun_control" id="mwASg" rel="mw:WikiLink" title="Gun control">gun control</a> legislation.