A tense moment at a congressional hearing turns ugly as a lawmaker dismisses grieving parents, bad news for the families and for the tone of the immigration debate.

• A mother testifying about her murdered daughter is brushed off by a congresswoman during a hearing on crime and immigration.
• The mother says she is "thankful" her daughter was only shot, not raped and dismembered like other victims, to underline how bad these cases get.
• The hearing centers on "angel families" — relatives of people killed in violent crimes tied to immigration.
• The clip highlights how heated and personal the fight over immigration and public safety has become in Congress.

Outlook: Expect more emotional hearings and sharper partisan fighting as immigration and crime stay front and center in Washington.