The Obama administration is weighing plans to circumvent Congress and act on its own to curtail tax benefits for United States companies that relocate overseas to lower their tax bills, seeking to stanch a recent wave of so-called corporate inversions, Treasury Secretary Jacob J. Lew said on Tuesday.

Treasury Department officials are rushing to assemble a broad array of options that would “change the economics of inversions,” Mr. Lew said. Options are still being developed although no final decision has been made about whether to go forward with administrative action to strip away tax incentives for the deals.