"Oil and gas interest" - from employees
From the WSJ
Clinton aides say what money the campaign has gotten from oil and gas interests is largely coming from workers who happen to like the former secretary of state. Employees in the oil and gas industry have donated $307,561 to the Clinton campaign, of a total of $160 million she has raised to date, according to the nonpartisan Center for Responsive Politics.
The industry has given an additional $25,701 to outside groups backing the campaign, which have raised more than $55 million on her behalf. And registered lobbyists with clients in the oil and gas industry have raised more than $600,000.
Mr. Sanderss campaign has received $53,760 from oil and gas industry employees.
The oil and gas industry is far from Mrs. Clintons largest backer. Wall Street, for example, has given more than $21 million to her campaign and outside groups supporting her.
No apology from the Clinton campaign appears in the works. Apologize for what? No. Ms. Palmieri said.
http://www.wsj.com/articles/clinton-sanders-feuding-escalates-as-key-contests-loom-1459552578
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I suppose the Sandersitas would like these employees to quit their jobs.