This was announced by the U.S. Embassy in Ukraine in a readout of the conversation between the two officials, Censor.NET informs.
The U.S. vice president also commended President Poroshenko and the government of Ukraine for the "hard work that went into ensuring passage," the message reads.
In addition, Biden commended President Poroshenko's decision to replace Prosecutor General Shokin, "which paves the way for needed reform of the prosecutorial service."
The U.S. vice president urged President Poroshenko to continue on this positive trajectory, to include successful implementation of the new legislation and continued visible progress on anti-corruption reforms, noting this will require "unity and stability," the Embassy's message reads.
Joe Biden also condemned the increasing violence in eastern Ukraine and noted that Minsk implementation by all sides remained the best way forward for resolving the conflict.