President Donald Trump’s executive order seeking broad changes to how elections are run in the U.S. is vast in scope and holds the potential to reorder the voting landscape across the country, even as it faces almost certain litigation.

In the most litigious presidential election in memory, court fights are even happening over where poll watchers may stand as the votes are tallied. The latest focus for Republicans in some places is on poll watchers, who are volunteers for candidates or political parties long used in elections. He has also falsely stated that poll watchers were “thrown out” of a polling site in Philadelphia, where he has claimed without evidence that “bad things" are happening. In Nevada, Trump's campaign and state Republicans went to court to try to stop the counting of Las Vegas-area mail-in ballots. The lawsuit was quickly resolved with an agreement that poll watchers can look at election books and approach poll workers when necessary.