Paul Pelosi Jr. has been in the energy business for quite a few years (just Google his name to see this), unlike Hunter Biden. So as weird as it might seem in present context, he might really have been in Ukraine for business. He also is an ultra-marathon runner, so if there was a marathon in the area around that time. Even if he had been in Ukraine for business, Miss Nancy needs to explain why she does not have a conflict of interest that should cause her to remove herself from stuff pertaining to the leaker-blower's complaint.
There may be a conflict of interest, but she still presides as Speaker of the House regardless of the conflict of interest. That should be something that those who are considering voting on impeaching this President should consider; although I highly doubt that they will. If anything Pelosi will protect her interests and those in her party will follow suit.
Sure her son may have dealings in the Ukraine, but the question is, does Nancy as well and has Nancy herself 'negotiated' in anyway with the Ukraine that could be seen as illegal. Was she involved in anyway in promoting or interfering with the '16 election to ensure that Hillary won?
I think it is prudent to consider all the obstruction that Pelosi has created in order to make it difficult for Trump to succeed even though she knows full well that it is in the best interest of the country; perhaps she is doing so that he would never be re-elected. becauase she realizes what he knows and doesn't want he to succeed in uncovering the corruption and holding people accountable.
Impeaching Trump would solve a lot of issues for those who are involved in the Clinton corruption.