One hundred forty-five million dollars will buy an awful lot of gratitude. The question in former Secretary of State Hillary Clinton’s case is whether she showed her appreciation in unacceptable ways.

Even before she lost the 2016 presidential election, Clinton demanded an investigation into her claims Russian officials colluded with now-President Donald Trump to help him win. Since then, she and other Democrat officials have kept up the same broken-record tune.

It may have backfired. Some members of Congress say their probe into Russian meddling with U.S. politics has led them back to Clinton. Specifically, they want to take another look at sale of U.S. uranium deposits — about 20 percent of the total — to a Russian company.

That happened during a series of transactions from 2009 through 2013. Clinton was secretary of state during the same period.

A Canadian firm had purchased the U.S. uranium rights, then was itself bought by Rosatom, the Russian company. Because of the strategic importance of the deal, it had to be approved by several U.S. agencies, including the State Department. At every step of the way, the go-ahead was given in Washington.

Meanwhile, some of the Canadian and Russian figures involved were pouring donations into the allegedly charitable foundation established by the secretary of state and her husband, former President Bill Clinton. The contributions may have totaled as much as $145 million.

There have been reports a new source of information, perhaps one contacted previously by the FBI, has something to say to lawmakers investigating the matter. They should pursue it vigorously. Clinton is right: Russian interference in U.S. government is unacceptable.