White House Press Secretary Josh Earnest confirmed Monday that President Obama is "very interested" in the idea of raising taxes through unilateral executive action.

"The president certainly has not indicated any reticence in using his executive authority to try and advance an agenda that benefits middle class Americans," Earnest said in response to a question about Sen. Bernie Sanders (I-VT) calling on Obama to raise more than $100 billion in taxes through IRS executive action.

"Now I don't want to leave you with the impression that there is some imminent announcement, there is not, at least that I know of," Earnest continued. "But the president has asked his team to examine the array of executive authorities that are available to him to try to make progress on his goals. So I am not in a position to talk in any detail at this point, but the president is very interested in this avenue generally," Earnest finished.

Sanders sent a letter to Treasury Secretary Jack Lew Friday identifying a number of executive actions he believes the IRS could take, without any input from Congress, that would close loopholes currently used by corporations. In the past, IRS lawyers have been hesitant to use executive actions to raise significant amounts of revenue, but that same calculation has change in other federal agencies since Obama became president.

Obama's preferred option would be for Congress to pass a corporate tax hike that would fund liberal infrastructure projects like mass transit. But if Congress fails to do as Obama wishes, just as Congress has failed to pass the immigration reforms that Obama prefers, Obama could take actions unilaterally instead. This past November, for example, Obama gave work permits, Social Security Numbers, and drivers licenses to approximately 4 million illegal immigrants.

Those immigration actions, according to the Congressional Budget Office, will raise federal deficits by $8.8 billion over the next ten years.