Factors applied in determining pretrial release are generally specified by statute. For (US) federal prosecutions, the factors are:
[QUOTE=18 U.S.C. § 3142]
(g) Factors to be considered.–The judicial officer shall, in determining whether there are conditions of release that will reasonably assure the appearance of the person as required and the safety of any other person and the community, take into account the available information concerning–
(1) the nature and circumstances of the offense charged, including whether the offense is a crime of violence, a violation of section 1591, a Federal crime of terrorism, or involves a minor victim or a controlled substance, firearm, explosive, or destructive device;
(2) the weight of the evidence against the person;
(3) the history and characteristics of the person, including–(A) the person’s character, physical and mental condition, family ties, employment, financial resources, length of residence in the community, community ties, past conduct, history relating to drug or alcohol abuse, criminal history, and record concerning appearance at court proceedings; and (B) whether, at the time of the current offense or arrest, the person was on probation, on parole, or on other release pending trial, sentencing, appeal, or completion of sentence for an offense under Federal, State, or local law; and
(4) the nature and seriousness of the danger to any person or the community that would be posed by the person’s release. In considering the conditions of release described in subsection (c)(1)(B)(xi) or (c)(1)(B)(xii) of this section, the judicial officer may upon his own motion, or shall upon the motion of the Government, conduct an inquiry into the source of the property to be designated for potential forfeiture or offered as collateral to secure a bond, and shall decline to accept the designation, or the use as collateral, of property that, because of its source, will not reasonably assure the appearance of the person as required.
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As you will notice, location of the proceeding does not appear. I suppose to the extent that judges must consider family ties, they’d look at the practicality of flight to nearby overseas relatives.