Press Release- The next time heavyweight David Tua steps into a boxing ring, it will be in the United States, possibly as soon as June, according to his promoter Cedric Kushner.  After two years away from the sport, the 32-year-old Tua stopped Talmadge Griffis in the 10th round March 31 in Auckland, New Zealand.  “David showed he’s back in full force both physically and mentally with his knockout of (Talmadge) Griffis,” said Kushner, Tua’s promoter.  “He passed the test and is back on track.  He’s ready to fight no later than the end of June,” said Kushner.  “And this time the fight definitely will take place in the United States."  “I know I’ll be sharper next time,” said Tua.  “I’m happy I went the rounds. I needed them after the layoff.  It was a big boost for my confidence knowing I had the stamina to go ten rounds."  For those interested in viewing Tua-Griffis, along with two supporting heavyweight bouts, 7-foot, 325-pound Nicolay Valuev against Attila Levin and Sinan Samil Sam against Lawrence Clay Bey, the broadcast still can be seen on an on-demand basis through the iNDEMAND and TVN television platforms.