The European Union (EU) has announced plans to levy a tax on airline emissions for all planes landing and taking off from EU airports. This tax would be calculated not only based on mileage flown in EU airspace but also for the entire length of the flight (thus, Chinese and Japanese airlines would be taxed for an entire journey from Beijing or Tokyo).

In the run-up to this weekend's G-8 summit at Camp David, journalists have unfavorably compared European "austerity" with Barack Obama's economic policies.

The courts should generally defer to the legal interpretations set forth in IRS revenue rulings and revenue procedures.

The tax code is 5,296 pages long and full of complicated details. We outlined a few of them in our recent column for the New York Times Magazine. So why hasn't Congress done anything to simplify the tax code? We posed the question to Alan D. Viard, a tax expert at the American Enterprise Institute. His response is below.

Ominously labeled "Taxmageddon," a host of tax policy changes are set to occur at year-end, and there truly is much at stake: $3.67 trillion of additional tax revenue over 10 years from the Bush tax cuts alone.

In a just-published piece in Tax Notes, AEI economists Kevin Hassett and Alan Viard explain how targeted tax increases on big oil companies pose significant risks to the economy.

In a recent letter, Martin Lobel describes as "intellectually bankrupt" our arguments against S. 940 and S. 2204, two recent bills that would have imposed unfavorable tax rules on five large oil companies that would not have applied to other taxpayers. Unfortunately, Lobel mischaracterizes our analysis of why the bills violate the rule of law.

With tax day deadline here, Congress returned to Washington Monday to vote on the "Buffett Rule," a proposal to impose a minimum 30 percent tax on people earning more than $1 million.

The proposal, which failed in the Senate, resembles the alternative minimum tax (AMT) in one way -- it was...