Obstructionist

[Sarah]

One who hinders progress; one who obstructs business, as in alegislative body.-- a.

[Sarah]

One who designs or acts in a way that obstructs others, making it difficult or impossible to do what needs to be done. Frequently uses [conflict of interest] to obstruct others. Also known as an [asshole] or [duh-weeb], and most likely proud of it.

[Sarah]

One who systematically impedes or interrupts progress.

[Mark Zuckerberg]

intentionally trying to stop or slow down an official process: