Lasers are not "all weather" weapons as far as I am aware. Clouds, snow, fog, rain, and just humidity all degrade their performance greatly.
[0] https://en.wikipedia.org/wiki/Golden_Dome_(missile_defense_s...
For one thing, it can do little to nothing about low flying nuclear tipped cruise missiles, especially in less than ideal weather. These already exist, so the Golden Dome system is already inadequate on day one.
> https://en.wikipedia.org/wiki/Golden_Dome_(missile_defense_s...
> President Donald Trump signed an executive order directing the United States Armed Forces to construct the [...] Golden Dome
Well, that's just taking the piss!