NEW YORK (AP) — Americans’ routine interactions with the federal government this week are increasingly being met with partisan messaging. As a Senate deadlock keeps the federal government unfunded, some traditionally apolitical federal agencies are using their official channels to spread a coordinated political message that the shutdown is the Democrats’ fault. The messages are appearing in banners on agency websites, in autoreplies to emails, and in social media posts. They blame the political party that is out of power in Washington, when both sides are refusing to accommodate the other. Some experts suggest that they might be violating a federal law related to political activity by federal employees.