Reuters is reporting that the Bertholf transited the Taiwan Strait in company with the destroyer USS Curtis Wilbur. This really should not be worth a mention. I am sure they were in international waters, but China has been getting their panties in a twist every time an American Warship passes through the Taiwan Strait. Don’t sweat it. If we were coming to do harm to China, we would bring more than a destroyer and cutter.
Chuck Hill's CG Blog 
USNI report of the incident with some additional background. https://news.usni.org/2019/03/25/42133
Two cutters and maybe a Frigate!
Now she is visiting Hong Kong. https://coastguardnews.com/coast-guard-ship-visits-hong-kong/2019/04/15/
An interesting note on what Bertholf is doing or might do, at the end of this post. http://nextnavy.com/us-navy-declines-to-party-with-plan/