But what do they actually have that's solid? Seriously. It's not illegal to do business with other countries, so the whole idea of having "business ties" really doesn't mean anything. Lots of presidents and other politicians have had ties with foreign countries, from Mexico to China to Saudi Arabia, so what makes Russia so different?
Here's what George Washington had to say about foreign entanglements:
In this sense, any politician who has ties with a foreign country, whether it's Canada, the UK, Mexico, Russia, North Korea, or any country outside the US would be considered the same. The true patriotic view (in George Washington's opinion) would be to view them ALL the same.
Of course, we abandoned and rejected most of George Washington's advice and counsel over a century ago, so you might argue that this view is irrelevant in this day and age. Still, I would argue that America's interests should always come first over the interests of any foreign power, even if they're an "ally."
As for the allegations of "Russian influence" in the election, give me a break. We put ourselves in that position by allowing money and media to influence elections, and it never seemed to occur to anyone that it might pose a problem and a potential threat to our democracy. Until now, apparently.