U.S. Senators traveling in Europe this week tested the waters with their European counterparts on whether they're interested in bilateral trade agreements between the two governments. Talks are set to begin next year between the U.S. and the European Union (EU), representing about a third of world trade.  However, critics contend the poor European economy, the debt crisis and a retarded U.S. economy make it unlikely a pact will be completed any time soon.  Sen. Max Baucus (D, MT), in Europe for high-level fiscal meetings, said he's pushing for new U.S. export opportunities with the EU, including expanded barley and beef trade.  Baucus said the biggest hurdle to overcome will be what he called non-scientific bans on U.S. pork and beef imports, and urged European leaders to bring their import policies in line with sound science.