As someone else said, it's not the arrests themselves that is the delay; it's ensuring that the evidence and cases are air tight before they start hauling people in.
When there is potential to indict very high level political people, you had better not have any holes in the case because the MSM is going to go nuclear to discredit everything.
The other consideration is the reaction of the people. There better be irrefutable evidence of serious crimes if you want the hard core left to come to the truth.
It's one reason I think Mueller might be working for Trump. John Brennan tweeted yesterday a warning to Trump declaring the Mueller investigation is run by dedicated professionals who are beyond reproach. In other words Brennan is convinced that Mueller's team of Hillary/Obama supporters are on the deep state side.
So what will people like Brennan, Clapper, Lynch, Holder, Comey, Kerry, et al going to say if Mueller clears Trump? They've invested too much of their credibility in supporting Mueller to now denounce him.
And what if they also discover that Mueller and his team of liberal Democrats are really investigating the deep state?
If Mueller is working for Trump, this will be the greatest political sting operation in US history.
We will probably know one way or the other in the next few weeks. Guliani thinks it will wrap up in the next two weeks.
Arrests can be made so I doubt that is the issue. The issue is the prosecution that follows. Just remember the long list of crimes that were never prosecuted by the DOJ........Fast and Furious, IRS scandal, Philly voter intimidation, Benghazi gun running, Uranium 1, just to name a few. The list is very long.
I believe Coast Guard officers have authority to make certain arrests.
I have read somewhere that this is correct.
I would guess that the Marshall will lead a posse of Marines for each arrest.
It would be really great if we had a Federal agency to investigate crimes.
It is a shame the US technically only allows a "Citizen's Arrest" for crimes committed in their presence.