The White House has declined to comment on the potential trip, which would be the first visit to Ukraine by top US officials since the war broke out.
In his nightly address Saturday, Volodymyr Zelenskyy ruminated on the significance of the date. "Today was Holy Saturday for Christians of the Eastern Rite. The day between the Crucifixion and the Resurrection. It seems that Russia is stuck on such a day," he said.
Ukrainian presidential adviser Mykhailo Podolyak said Sunday that Russian forces were "continuously attacking" the encircled Azovstal steel plant in Mariupol on Easter Sunday.
"Orthodox Easter 2022. But right now, RF (the Russian Federation) is continuously attacking the Mariupol Azovstal," he said on Twitter.
Two children were killed in the Ukrainian city of Donetsk amid Russian fighting, according to the region's governor Pavlo Kyrylenko.
In a tweet posted on Sunday Kyrylenko said two girls, aged 5 and 14, died after their family home was destroyed "by Russian occupiers."