In 2011, Oppermann publicly spoke out in favor of holding a national referendum over fundamental principles of the European Union on the day of the 2013 parliamentary election.

In 2013, Oppermann criticized the government of Chancellor Angela Merkel as news emerged of its intentions to sell arms to Saudi Arabia, saying that the conservatives wanted to "totally upgrade" the country's military capabilities.

Faced with 800,000 migrants arriving in Germany in 2015, Oppermann said his party would never accept a "CSU proposal to create 'transit zones' near the border, where asylum seekers with no chance of staying could be quickly sent back home".
In 2011, Oppermann publicly spoke out in favor of holding a national referendum over fundamental principles of the European Union on the day of the 2013 parliamentary election.
In 2013, Oppermann criticized the government of Chancellor Angela Merkel as news emerged of its intentions to sell arms to Saudi Arabia, saying that the conservatives wanted to "totally upgrade" the country's military capabilities.
Faced with 800,000 migrants arriving in Germany in 2015, Oppermann said his party would never accept a "CSU proposal to create 'transit zones' near the border, where asylum seekers with no chance of staying could be quickly sent back home".
Thomas Oppermann