If you want to make brownie points and offer a conciliatory gesture to help stalled talks, this is how you do it.
I'm a little more comfortable thinking about it as if you want to try to make a connection with someone on a more personal level which shows a degree of cultural sensitivity (absent for the past 8 years) which may enhance the possibility of a deeper, long term relationship, this is how you do it. On another level Americans are increasingly estranged from what used to be known and practiced as manners, something which doesn't go over well in Japan.
Traditionally, the ultimate penalty in Japanese society was
村八分 "murahachibu"、or banishment from the village, thus severing all your relationships.
Japan, if nothing else
, is a nation of relationships which find structure in communication via gesture (non verbal) as well as keigo (verbal)."Why, in the West, is politeness regarded with suspicion? Why does courtesy pass for a distance (if not an evasion, in fact) or a hypocrisy? Why is an "informal" relationship (as we so greedily say) more desireable than a coded one?"
......from French writer, lexicologist, philosopher Roland Barthes excellent treatise on Japan, Empire of Signs.