A federal judge who has become a frequent legal thorn in the side of President Donald Trump and his allies is now presiding over a fight to unseal the warrant used to search the home of Rep. Ilhan Omar, D-Minn. The battle over whether to unseal the search warrant comes amid two separate federal investigations into the Democratic congresswoman stemming from concerns about discrepancies between financial disclosures filed a year apart and allegations that her father committed fraud when completing immigration paperwork. Omar immigrated to the United States from Somalia in 1995, when she was 12 years old. Investigators are...