Let's have fun correcting tools in sheds that need sharpening:
'its' is a possessive adjective
'it's' is a contraction of 'it is'
It's and its are not interchangeable. 
Trump's surely rich and getting richer from his position as POTUS--at least until he's prevented from doing so by laws which forbids the president from accepting payments from foreign governments that might seek favors in return. 
It's a bit of a stretch to say Melania is one of the most beautiful women in the world--it's a pretty big world and she's clearly had several plastic surgeries, lives with a disgusting pig of a husband and that has taken a toll on her once good looks. Seriously, image having to see DT naked. So disgusting.
That Donald Trump legitimately won the 2016 election legitimately remains to be proven in the minds of millions of people and fortunately Mueller is likely just the person who will be able to discover whether he or anyone in his campaign colluded with the Russians to influence the election.