In 2017 the Repub led Senate Intel Committee conducted an extensive investigation into reports stemming from Ms Chalupa that the Ukraine meddled in our 2016 election.
The Senate Committee concluded that there was no meddling or interference by the Ukraine!
actual PDF of report
Yet, dishonest Republicans are still clinging unto Trump's ridiculous conspiracy theory in an attempt to run cover for Trump after getting busted attempting to cheat in the 2020 election. Basically, some Repubs in Congress choosing Trump over the truth! Which of course they do because they know their constituents don't know any better and think they can get away with it. They may get a way with it for a while but, like any crime of this nature, the public will eventually learn the truth.
What is basically boils down to is many in Congress would rather promote talking points about the Ukraine that originated with Putin and the Russian Intel Services, than side with America in order to protect a pathological lair in Trump.