Brussels and Washington want to deepen a relationship that accounts for a third of global trade, and ending the EU import ban on live pigs and beef washed in lactic acid is meant to show the Europeans are serious about a deal.
The ban will be lifted from 25 February, dropping European objections that were based on differing hygiene and husbandry methods in meat production. US farmers have long regarded these concerns as unscientific.
The EU may also consider easing restrictions on imports of American animal fat, known as tallow, used in biofuels.
"The United States had certain preconditions for talks to start. We want to show them that Europe can deliver," said a senior EU diplomat involved in preparing for negotiations.
A US spokeswoman said the United States was "pleased" that the EU had lifted its import bans on live pigs and beef washed with lactic acid, but stopped short of saying that this was sufficient to clear the way for US-EU trade talks to begin.
"Effective February 25, these measures will help increase exports of US beef and live swine to European customers," Andrea Mead, spokeswoman for the US Trade Representative's office, said in an email.
EU Trade Commissioner Karel De Gucht is due in Washington on Tuesday to put the finishing touches to a joint EU-US report that is expected to recommend going ahead with free trade negotiations.
Import tariffs between the European Union and the United States are already low, and the real benefit would come from increased access to each other's markets, as well as common regulations that would remove the high costs that smaller companies face if they want to export beyond their borders.
No date has yet been set for the release of the joint EU-US report on the viability of trade talks, initially expected by the end of last year, generating some concern among European and US companies that support the deal.
