The move comes ahead of the second anniversary of Russia's invasion.
But still no direct mention of Alexei Navalny's death.
More than 400 people were detained across the country at the weekend while trying to honour the politician's memory.
Cheney also warned of a pro-Russia faction growing within the Republican Party.
Congress will be out of town next week, but US lawmakers swear they have not forgotten Ukraine as the second anniversary of Russia’s full-scale invasion nears.
"He will probably be remembered as the best president of Russia that Russia will never have," the Polish foreign minister said.
The opposition leader fell unconscious while on a walk, the prison has claimed.
No, the Russian president does not wish he hadn't started the war in the first place.
After Biden denounced his comments, Trump called him "uninformable."