HAUPPAGUE - Suffolk County District Attorney Thomas Spota is calling on the federal government to step up and pass tough new gun laws that he says will protect innocent victims. Spota held a news conference today to display 10 illegal weapons that he says were taken off of Suffolk streets. One of them, a 9 mm semiautomatic, was used by a Bloods gang member to kill a 19-year-old cab driver during a robbery. The same gun was used in two other shootings on Long Island, Spota says.Seven of the 10 guns Spota displayed were sold in Southern states and transported here, he says. He pointed to lax laws in the South that make it easy for criminals and gang members to pass weapons across state lines.In the past 4 months, eight NYPD officers have been shot and in each case, Spota says the illegal guns were traced back to Southern states.To watch extended footage from Spota's news conference, go to channel 612 on your iO digital cable box and select 'iO Extra.'