What "Ukrainian" statements? We know about less than a handful of articles. This may shock you, but it's actually legal for representatives of a country to push back on Trump's statements during the campaign about their sovereign territory. You can argue it's inappropriate, but they did this in public under their own names. That's "evidence" of Ukrainians standing up under their own names and titles for the interests of their country.
That's not "interfering" with elections. We know what that looks like and it's hacking emails, troll farms pushing out propaganda by the minute on social media, fake Facebook sites, all of it directed from Moscow, in secret with an intent to deceive, sow discord, division.
Conflating those two is just bull****, hackery. It's shameful the GOP is pushing this nonsense and you're dutifully repeating it.
BTW, you'd be fine I assume with Biden conditioning tariffs on China's Xi publicly announcing investigations into the Trump family, right? We won't know until China puts their massive intelligence network putting Trump's family under investigation, right? So that's a good thing! That's your standard here.