His columns on the European Union won the Peter Weitz Prize in 2004, awarded by the German Marshall Fund, which said they showed "extraordinary talent in covering the complexities of a unifying Europe in search of an identity.

"[3] Moving to New York in 2008, Kaminski served on the Journal’'s Editorial Board, focusing on foreign affairs, longform writing and interviews, and the military.

[4] He was also a Finalist for the Pulitzer Prize in Commentary in 2015 for work that documented Russia’s attack on Ukraine in February 2014 and advocated for a more robust Western response.

[9][10] Named Editor-in-Chief of Politico in Washington in 2019, Kaminski led the publication through two American election cycles, the COVID-19 pandemic, and its sale to Axel Springer in late 2021.

[11][12] During his time at the helm, Politico broke the story that the U.S. had secretly frozen military aid to Ukraine, which lead to the first impeachment of President Donald Trump over alleged efforts to pressure the Ukrainians to investigate Joe Biden and his family.

In 2022, Politico published a draft opinion of the Supreme Court ruling to overturn Roe v. Wade, which was subsequently confirmed as accurate by Chief Justice John Roberts.