Say what you want about the "system" and the two parties and so on, but we the people send our senators and reps to Congress, and the same is true at the state level. This type of thing would be best done at a state level to show people, particularly those in other states that it can work well.
Before you even get in the weeds as to how voting actually works, that two party thing you mentioned provides, at the ideal best, two people with two sets of ideas about how to get things done. IF they don't agree on how to manage something (say we get the rare politician who's not in favor of further deregulating banks), there's no guarantee that one of those two ideas will be any good, or aligned with the political zeitgeist they're supposed to represent. Much more often, the wedge issues they differ on are a fraction of the things they'll be making decisions about, and stuff like military spending, bank deregulation, and general market deregulation are bipartisan supported. So if you don't like either of those, you're effectively excluded from the political process.
Then, you have all the ways in which the voting process is gamed by those in charge of it. Gerimandering is an obvious and easy one to spot, but there are other, more pernicious methods employed - like restricting voting to a single day, not making voting a holiday, purging voter rolls prior to the primaries (we'll deal with the primaries in a second), restricting felons from voting (whilst making things like marijuana possession a felony, an easy way to shunt out the underprivileged). There's more, for good reading on this topic check out Republic Lost by Lawrence Lessig.
We are married to first-past-the-post voting, which is demonstrably the worst system but the easiest to game.
The supreme court, which makes many of the most impactful political decisions, isn't voted in. And they have life terms. So even if you manage to make progress elsewhere, they can just decide that things should be different and change the way the law works.
The Senate arbitrarily distributes the power to block legislation among the least populous states, making it easier to manipulate the population into voting for people who will do this.
K Street (the lobbyists) literally get paid to 'help' draft legislation that favors only those who can afford it. Some of our laws are actually for sale.
Then you have the primaries, which are effectively controlled by two fairly small cabals of (who exactly? I dare you to enumerate the people involved). Each of which has it's own set of obtuse rules that's not subject to an iota of the scrutiny that actual elections are subject to, even though you could make the argument that the primaries are the more important election, because they decide what the two options will be.
Then there's the news. Rather, there's the institutions that claim to be news, but all of which behave more like winged propaganda machines, pumping their color and fueling anger at (whatever the wedge issues are for the other team today). These outlets all have things they will not talk about, like the issues with our elections or growing income inequality, because these things are precisely the things that the power structure, which all major news networks benefit from, is founded upon.
One thing both parties agree on completely; there should only be two parties. This would strike one as odd if they weren't so deeply acclimated to the situation.
Oh wait, no... that never actually happened because governments actually willingly give up power all the time.
And outside of the two instances you mentioned, the vast majority of quarantine measures were indeed voluntarily lifted without injunction from the courts.
But I suppose it's simply the nature of modern hyperreality that we must remember the past differently.
So you're saying that an investigator looking for a specific type of evidence cannot find other evidence of the same crime? Are they then supposed to go back to a judge to say now we need to modify the warrant or get a new warrant? Do they leave people around so the new evidence isn't removed while the new/updated warrant is obtained? Are their time limits on the execution of a warrant?
“Fruit of the poisonous tree” is a legal metaphor used to describe evidence that is obtained illegally. The logic of the terminology is that if the source (the "tree") of the evidence or evidence itself is tainted, then anything gained (the "fruit") from it is tainted as well.
The doctrine underlying the name was first described in Silverthorne Lumber Co. v. United States, 251 U.S. 385 (1920). The term's first use was by Justice Felix Frankfurter in Nardone v. United States (1939).
Such evidence is not generally admissible in court. For example, if a police officer conducted an unconstitutional (Fourth Amendment) search of a home and obtained a key to a train station locker, and evidence of a crime came from the locker, that evidence would most likely be excluded under the fruit of the poisonous tree legal doctrine.
The fruit of the poisonous tree doctrine is intended to deter police from using illegal means to obtain evidence.
https://en.wikipedia.org/wiki/Fruit_of_the_poisonous_tree
See also “exclusionary rule”: