Has the Supreme Court more power than Congress and the President
No. Their powers are different and hard to compare directly, but are not greater than the powers of other branches.
The Supreme Court, without Constitutional precedent, stopped the 2000 election in Florida before all the ballots were counted which gave the election to Bush,
That is incorrect. All the ballots had been counted. The Democrats were trying to recount
the ballots, again and again and again, trying to find a way that would finally put Gore ahead. Had they found such a way, they would have declared that one recount valid over all others and then blocked all further recounts. It was a clearly transparent attempt to steal the election, but it failed because they never came up with a count that put Gore ahead.
What the Supreme Court did was note that there was no longer any time to keep recounting the ballots. We were at the time when Bush would be declared the winner by default, so it was time to shut things down.
and declared that political donations were freedom of speech and that was no limit on how much money the rich could donate,
It always seems to bother the Left when people who disagree with them are allowed to have a say.
and long before that they re- interpreted the first two amendments to fit their own version - again without Constitutional precedent.
The Constitution very clearly includes all Common Law Rights, including the right to carry a gun when you go about in public in case you need to defend yourself. Note the Ninth Amendment.