A tipster was awarded US$1.8 million for reporting misconduct committed overseas
Trade group also calls for action on tax reform and money laundering
The duo provided "significant information" that led to an investigation
Regulator says "there is a point at which a delay becomes unreasonable"
Whistleblowers repeatedly reported alleged violations internally before providing a tip to the SEC
The award is the first under a program designed to incentivize internal reporting
The agency has now awarded more than US$85 million to whistleblowers
One tipster received US$37 million, while the other got US$13 million
Reward is more than US$2 million