A Republican senator is calling for an investigation into the business dealings of Donald Trump Jr. and Hunter Biden following the revelation that a Russian oligarch paid for Trump Jr. ’s post-wedding festivities in the Caribbean earlier this year.
Source: [NBC News](https://www.nbcnews.com/politics/congress/gop-senator-subpoena-donald-trump-jr-hunter-biden-kremlev-wedding-rcna599182)