Former Iron Maiden singer Paul Di'anno has scrapped his U.S tour for a second time over visa problems. The British rocker had been due to tour the States in December (12), but the trek was called off after Di'Anno failed to obtain the necessary work documents. He had planned to head back to the U.S. this summer (13) to play the rescheduled dates, but Di'Anno has now revealed the visa issue has yet to be resolved. The singer tells Blabbermouth.net the tour is "being rescheduled to the later part of this year". Di'Anno, who was replaced in Iron Maiden by Bruce Dickinson, last toured in the U.S. in 2010 after previously being jailed in California in the mid-1990s on gun and drug offences. He was subsequently deported. He endured another stint behind bars in his native Britain in 2011 after he was convicted of illegally collecting state benefits by falsely claiming he suffered nerve damage to his back which prevented him from working.