4. What is the core philosophy behind "Integrated Border Management"?
(A) Closing all borders to prevent any entry.
(B) Replacing human police with fully automated robots.
(C) Collaboration between various agencies to stop threats early.
(D) Allowing all migrants to enter without any checks.

Passage B: Challenges in Migration Management
The management of foreign nationals, particularly regarding "illegal stay," has become a cornerstone of national security國家安全根本. Authorities face the daunting challenge艱鉅的挑戰 of distinguishing 區別between legitimate 合法的asylum seekers尋求避難者 and potential criminal elements不法之徒. The complexity複雜事物 is exacerbated加劇 by "document fraud偽造文書," where sophisticated 嚴密的syndicates犯罪集團 produce forged假冒的 biometric passports生物特徵辨識護照 that bypass electronic gates. Effective management requires a multi-tiered多層的 approach: intelligence-led border control, rigorous嚴格的 interior enforcement境內執法, and robust international return programs完善的國際潛返計畫. When a foreign national violates the Immigration Act, the deportation驅逐出境 process is often delayed by legal appeals上訴 or the refusal of the home country to accept the return of its citizens. Consequently最後, nations are shifting toward "Integrated Border Management," emphasizing 重視cooperation between police, customs, and carriers to intercept 攔截threats威脅 before they reach the border.

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