This could mean the Welsh Assembly is given more powers to levy some taxes, such as rubbish dumping costs, air passenger duty on flights and stamp duty when buying homes, although it would not be limited to those taxes.

BBC: Silk commission debate part one

Although the ADA is deferential to national governments when it comes to the details of implementing their antidumping laws, it does articulate certain minimum standards intended to limit the scope for abuse, such as reaching affirmative findings of dumping when no dumping has occurred or manufacturing punitively high antidumping duty rates, for example.

FORBES: Protectionist Antidumping Regime is a Pox on America's Glass House

To appreciate the affront to fairness and mathematical integrity that zeroing represents, recall that antidumping duty rates are determined by calculating a weighted average dumping margin, which derives from individual dumping margins calculated for multiple comparisons.

FORBES: Protectionist Antidumping Regime is a Pox on America's Glass House

The antidumping duty ultimately imposed is, in theory, equal to the weighted average dumping margin calculated for all U.S. sales expressed as a percentage of U.S. sales value.

FORBES: Protectionist Antidumping Regime is a Pox on America's Glass House