<a href="https://en.wikipedia.org/wiki/Voting_machine" id="mwwQ" rel="mw:WikiLink" title="Voting machine">Voting machines</a> are approved by the <a href="https://en.wikipedia.org/wiki/United_States_Congress" id="mwwg" rel="mw:WikiLink" title="United States Congress">U.S. Congress</a> for use in federal <a href="https://en.wikipedia.org/wiki/Elections_in_the_United_States" id="mwww" rel="mw:WikiLink" title="Elections in the United States">elections</a>.