oil markets remain jittery, the cargo seizure is the latest escalation between Washington and Tehran after years of sanctions pressure by the US over Iran's nuclear program. Iran claims tanker injured citizens12 US senators on Thursday urged President Joe Biden to remove Treasury Department policy hurdles that have prevented the Department of Homeland Security from seizing Iranian oil shipments for more than a year. Iran claims tanker injured citizens12 US senators on Thursday urged President Joe Biden to remove Treasury Department policy hurdles that have prevented the Department of Homeland Security from seizing Iranian oil shipments for more than a year