US President Donald Trump has launched another attack on one of America's allies, this time, Germany is his target as he tweeted "the people of Germany are turning against their leadership as migration is rocking the already tenuous Berlin coalition".
"The overwhelming majority of the German population supports this idea and this concept, and that's why we want to provide support today for implementing it", he said. Merkel opposed the move, arguing that Germany should work with other European Union countries to find a common solution to the problem.
Merkel's talks later Monday with Italian Prime Minister Giuseppe Conte in Germany could prove crucial if she is to have any chance of forging an agreement in Brussels.
Conte called on the European Union to change its position on migration and adapt current European Union asylum guidelines in favour of "a new approach that is more harmonious, so that whoever sets foot in Italy, sets foot in Europe".More news: Back-to-back US Opens for Koepka
Several high profile crimes by migrants have also fuelled public anger. And the issue has been inflamed recently by the rape and murder of a 14-year-old German girl that authorities believe was carried out by an Iraqi asylum seeker.
In his previous job as Bavarian governor, Seehofer was one of the leading critics of Merkel's decision in 2015 to leave Germany's borders open as migrants streamed across the Balkans.
Stressing that Germany must change direction on immigration, Seehofer said: "I can not say that we have a grip on the issue".
Merkel herself has come a long way since the fall of 2015 when she said that there was no legal limit to the number of people who have a right to asylum and told Germans that "we will manage" the challenge of integrating migrants, many of them from war-torn countries like Syria and Afghanistan.
"In essence, that is a scandal", he said.More news: Elon Musk launches investigation into sabotage at Tesla
The CSU fears that without a tougher migration policy, the far-right, anti-immigrant Alternative for Germany (AfD) party "will become stronger in Bavaria at the expense of the CSU", says Jürgen Falter, a political scientist and expert on Germany's far right.
Merkel and Seehofer both argue that the law is on their side. Germany's CSU is running scared because they have aligned themselves with a chancellor who is seen as not caring that her policies have allowed criminal aliens to run wild.
France's President Emmanuel Macron makes a gesture during a press conference with German Chancellor Angela Merkel at a press conference after a meeting in the guest house of the German government in Meseberg north of Berlin, Germany, Tuesday, June 19, 2018.
On Monday the foreign affairs minister, SPD lawmaker Heiko Maas, tweeted a strong defense of Merkel and a Europe-wide response to migration: "The EU stands for a promise that has made Europe a place of longing worldwide".More news: Audi CEO arrested in Germany over diesel scandal
"It would be nearly a miracle if she emerges a victor from the next European Union summit", Welt daily said. That banished - if only for now - the spectre of Seehofer pushing through his proposal in defiance of the chancellor, which would risk bringing down her government.