Mad,
You may not be familiar with how probabable cause, subsequent investigation, and resulting prosecution goes.
If:
There's a statement made to police that a crime has been committed;
There's a statement made that a person witnessed the crime;
There's an investigation that follows which reveals corroborating evidence;
There's enough evidence to establish probable cause that the crime was committed and the suspect committed it;
Then there is sufficient grounds for an arrest.
Again- you are not seeing the entire set of circumstances here. It was not a simple matter of "Hey cops! My neighbor just drove drunk, go get him!" and the police walking over & arresting the guy the minute they saw him based solely on the above statement.
I don't know the facts either, but from experience I'd feel safe in assuming it was something like the following:
"Officer, I believe my neighbor was just driving drunk."
"And why do you say that?"
"Well, when I was out in the front yard watering my lawn, I saw him driving down the street coming home next door, and he was wandering all over the road. He drove over the sidewalk there getting into his driveway. He parked partly on the sidewalk in that car right there where it still is. I saw him throw what looked like a whiskey bottle out onto the lawn through the car window, and I saw him get out and go into his house. He was walking very unsteadily and tripped on the front stairs before he got the door open."
"How long ago was this?"
"About 20 minutes."
"Have you seen him come out, or anybody else go in or out?"
"No."
"And you're sure it was the man who owns that car?"
"Yes, he's lived here for five years and he drives it all the time."
"What's his name?"
"Harold Herkimer."
"Can you describe him?"
"He's caucasian, about 56, maybe 5'9", kind of heavy, has grey hair."
"What was he wearing?"
"A white shortsleeved shirt, and dark blue pants."
"Thank you, ma'am."
The officers walk next door to where the car is still parked partially on the sidewalk. The muffler is still hot. They find an empty vodka bottle ten feet from the car on the front lawn. They run the plate, the car is registered to Harold Herkimer at that address. They knock on the door, which they have a perfect right to do, and ask the woman who answers if Mr. Herkimer is home and if they can speak to him. As they're doing this, a white male in his 50s, about 6 feet tall, 240 pounds, with grey hair, and wearing a white shortsleeved shirt with dark blue pants walks in view. His gait is unsteady, his speech is slurred, his eyes have difficulty focusing. Officers ask him if he is Harold Herkimer, he says he is.
1. Complainant suspects a crime & reports it to police.
2. Police obtain detailed statement from eyewitness placing an identified
suspect behind the wheel, with name & description.
3. Suspect car is parked irregularly, muffler still hot (indicating the time
element is very recent), registered to the named suspect at the
suspect's address pointed out by complainant.
4. Vodka bottle confirms complainant's statement about seeing
what appeared to be a whiskey bottle tossed out by suspect. Bottle
is empty, indicating the probability that the contents were imbibed (since
people generally don't dump a bottle of booze out).
5. A male meeting the suspect description walks into plain view as officers
are still standing outside the front door. He exhibits signs consistent with
alcohol consumption in the officers' experience and training (and their
opinions based on those are recognized by the courts).
6. Based on the above, the officers determine that there is probable cause to
believe a crime (DUI) was indeed committed.
7. There is sufficient evidence independent of the complainant's initial
statement to believe the suspect is the person who committed the
crime.
8. There is no time to try for an arrest warrant, since the process typically
takes at least several hours and the suspect's blood alcohol level will
be reduced by the liver in the meantime.
9. Under the exigent circumstances rule, supported by the plain view doctrine
of seeing the suspect from a place the officers were legally entitled to be,
an arrest is made.
I'm not saying these are the circumstances, just illustrating the process. Believe me, it wasn't as simple & threadbare as you're seeing in the news article. A successful prosecution can start with a fairly vague statement, such as "Hey cop, I think them people's dealin' dope in that house." That doesn't get a busted door solely on the strength of the one statement. There has to be a lot more.
Like the law or not, like the cops or not, there are rules of the game, and I never saw much point in making an arrest I knew I couldn't win in court right up front. I had better things to do with my time.
Carebear,
You're very welcome.
Denis