 Lawmakers on Capitol Hill say police were suspicious of Donald Trump's attempted assassin on Saturday, more than an hour before the young man began shooting. Briefings from top officials yesterday offered some of the most detailed information to date on what happened ahead of the shooting at Saturday's campaign rally in Butler, Pennsylvania. Alabama Congressman Gary Palmer says the 20-year-old gunman was observed pretty far in advance of him shooting. He says authorities saw someone engaged in suspicious activity. Wyoming Senator John Barrasso.