Senate Armed Services Committee chair Roger Wicker and other Republican leaders said they are closing probes after finding no evidence of war crimes in the Sept. 2 U.S. strike that killed two survivors off Venezuela, following months of reporting that raised legal and ethical questions about the campaign.The announcements follow President Donald Trump’s move to expand U.S. maritime operations, including a partial naval blockade on sanctioned Venezuelan tankers and the seizure of the crude tanker Skipper, amid roughly 25 strikes in international waters and the eastern Pacific that critics say have killed about 95 people.Democrats and international law experts warned the operations risk violating the laws of war, and lawmakers in the House had this month narrowly rejected nonbinding resolutions seeking to invoke Section 5 of the War Powers Resolution to constrain the administration’s authority.