I'd say that the title says it all. For years USA had been telling Poland that they are allies but nothing specific came out of it. For example Polish people still need visas to be able to travel to USA, although every president of USA claims that Poland is very important partner for americans.
Not sure what's in it for the Polish citizens, but there may have been some secret deals:
Poland has been in the spotlight since 2005, accused of hosting a secret prison operated by the US Central Intelligence Agency (CIA) where terrorism suspects were held and tortured between 2002 and 2005. This report documents the search for accountability for Poland’s complicity in the CIA’s rendition and secret detention programmes. It focuses on Poland’s duty to investigate and bring to justice any Polish and foreign agents and officials responsible for crimes under international law such as torture and enforced disappearance. It is time to unlock the truth in Poland.
From:
https://www.amnesty.org/en/library/info/EUR37/002/2013/en
