A timeline of activities of a cultlike group tied to the killing of a Border Patrol agent - What to know about the killing of a Border Patrol agent and ties to a cultlike group - Mexican cartels fire at Border Patrol agents as Trump ramps up enforcement: officials - Border Patrol agent shot and killed along northern border - In Arizona, Trump pitches ideas to attract more Border Patrol agents - Illegal immigrant bites Border Patrol agent in the face amid 'significant rise' of attacks on CBP - Border Patrol agent accused of making women expose themselves as part of immigration 'search' - Border Patrol agent jailed for charging illegal to stay in U.S.