If this feckless Congress doesn't enact Pence-Cantor soon, the White House should be bold and institute indexing by executive order.

FORBES: Capital Idea

Of course, there isn't any guarantee that Congress won't enact legislation to retroactively apply the GST tax to transfers made in 2010.

WSJ: Family Value: Last Chance to Foil a Gift Tax

In 2010, the law also expired, and Congress didn't re-enact it until mid-December of that year.

WSJ: Tax Report: What to Do About IRA Charitable Donations