It very often can be. Telling your lawyer to lie, to destroy evidence, to threaten a witness— all are prosecutable as obstruction of justice. Such prosecutions happen all the time.
It has to be proven.
And do you really think Michael Cohen was smart enough to have recorded conversations with President Trump?
It does. And at this point, Cohen's uncorroborated testimony is worthless.
And do you really think Michael Cohen was smart enough to have recorded conversations with President Trump?
Cohen, according to many reports, used to record all his phone calls. If he has this on tape, it could get serious. Otherwise, it will be another nothingburger.