Navalny returned to Russia in January after recovering from what German doctors say was nerve agent poisoning.
The legislation allows him to run for two more six-year terms once his current stint ends in 2024.
NATO is concerned about a Russian military buildup near Ukraine's borders.
Being woken up by a guard every hour during the night amounted to torture, he said.
Biden appeared in an interview last week where he said he thought Putin was "a killer".
It marks the end of Russia's winter.
The announcement marked a sharp turn away from former President Donald Trump’s reluctance to confront Russian President Vladimir Putin.
It appears to be the first case of bird flu being passed to humans from birds in the country.
Gennady Shulga runs an opposition blog.