Hold Euros, a common currency where the central bank has complete control and responsibility. Expect GBP and USD to fall in relative value in the face of trade barrier uncertainty. High probability that China will begin to trade out of its USD dollar holdings in the face of the USA attempting to inflate out of foreign debt and devalue the US dollar to discourage imports and encourage exports. Yes, such action on the part of the US government would require political balls, but for all his perceived faults you have admit Trump has those.
.

ColdMonkey mines Gridcoin through generating voluntary BOINC computations for science...