WASHINGTON — The White House has denied any connection between delaying a report on China's currency policies and seeking Beijing's cooperation on new penalties against Iran for its nuclear program.The report to Congress was due April 15 — just as China's president comes to Washington for a nuclear security summit.Treasury Secretary Timothy Geithner said Saturday he was delaying publication because several high-level international meetings in the coming months would be a better way to advance the US position.White House economic adviser Lawrence Summers told ABC television's "This Week" that the Iran matter wasn't causing the delay and that those meetings were a good way to hold direct dialogue with the Chinese.