India, June 13 -- As President Donald Trump prepares to celebrate his 80th birthday on June 14, attention is being placed on a little-known US law that limits whether sitting presidents can personally keep expensive gifts from foreign leaders.

According to The Mirror US, federal ethics regulations under the Foreign Gifts and Decorations Act treat high-value presents given to a US president as gifts to the American government, not to the individual officeholder.

Under the rules, presidents may temporarily accept diplomatic gifts, but if the item exceeds the government's "minimal value" threshold, the gift must either be turned over to the government or purchased personally at fair market value.

The current threshold stands at $480, acco...