Republican Speaker Mike Johnson has held up a bill for months that would supply $60 billion in military and financial aid for Ukraine.
"Quick passage of U.S. aid to Ukraine by Congress is vital. We recognise that there are differing views in the House of Representatives on how to proceed, but the key is to keep the issue of aid to Ukraine as a unifying factor," Zelenskiy said on X.
Ukrainian troops are on the back foot on the battlefield, facing shortages of artillery supplies with the U.S. assistance held up in Congress and the European Union failing to deliver on time munitions that it had promised earlier.
In a statement, Zelenskiy said he briefed Johnson about the situation on the battlefield and also spoke about "the dramatic increase in Russia's air terror".
Last Friday, Russia conducted its largest air strike on Ukraine's energy system since invading in February 2022, damaging power units at a major dam and causing blackouts for more than a million people.
Moscow has described its recent attacks as part of a series of "revenge" strikes in response to Ukrainian attacks on Russian regions. Russia has increased its use of harder-to-stop ballistic missiles. It denies targeting civilians, though many have been killed in its strikes.
(Reporting by Yuliia Dysa; Editing by Peter Graff)
